The dnf repolist command will the repositories you have enabled.

~]# ]# dnf repolist
repo id                                                                              repo name
fedora                                                                               Fedora 34 - x86_64
fedora-cisco-openh264                                                                Fedora 34 openh264 (From Cisco) - x86_64
fedora-modular                                                                       Fedora Modular 34 - x86_64
hashicorp                                                                            Hashicorp Stable - x86_64
updates                                                                              Fedora 34 - x86_64 - Updates
updates-modular                                                                      Fedora Modular 34 - x86_64 - Updates

The dnf repoinfo will display more information for each repository you have enabled.

]# dnf repoinfo
Last metadata expiration check: 1:05:19 ago on Sun 15 Aug 2021 05:45:44 AM CDT.
Repo-id            : fedora
Repo-name          : Fedora 34 - x86_64
Repo-revision      : 1619174877
Repo-updated       : Fri 23 Apr 2021 05:47:57 AM CDT
Repo-pkgs          : 63,586
Repo-available-pkgs: 63,586
Repo-size          : 78 G
Repo-metalink      : https://mirrors.fedoraproject.org/metalink?repo=fedora-34&arch=x86_64
  Updated          : Sun 15 Aug 2021 05:45:44 AM CDT
Repo-baseurl       : https://ewr.edge.kernel.org/fedora-buffet/fedora/linux/releases/34/Everything/x86_64/os/ (69 more)
Repo-expire        : 604,800 second(s) (last: Sun 15 Aug 2021 05:45:44 AM CDT)
Repo-filename      : /etc/yum.repos.d/fedora.repo

Repo-id            : fedora-cisco-openh264
Repo-name          : Fedora 34 openh264 (From Cisco) - x86_64
Repo-revision      : 1614041340
Repo-updated       : Mon 22 Feb 2021 06:49:00 PM CST
Repo-pkgs          : 4
Repo-available-pkgs: 4
Repo-size          : 908 k
Repo-metalink      : https://mirrors.fedoraproject.org/metalink?repo=fedora-cisco-openh264-34&arch=x86_64
  Updated          : Sun 15 Aug 2021 05:45:43 AM CDT
Repo-baseurl       : https://codecs.fedoraproject.org/openh264/34/x86_64/os/ (0 more)
Repo-expire        : 1,209,600 second(s) (last: Sun 15 Aug 2021 05:45:43 AM CDT)
Repo-filename      : /etc/yum.repos.d/fedora-cisco-openh264.repo

Repo-id            : fedora-modular
Repo-name          : Fedora Modular 34 - x86_64
Repo-revision      : 1619173536
Repo-updated       : Fri 23 Apr 2021 05:25:38 AM CDT
Repo-pkgs          : 2,050
Repo-available-pkgs: 0
Repo-size          : 2.2 G
Repo-metalink      : https://mirrors.fedoraproject.org/metalink?repo=fedora-modular-34&arch=x86_64
  Updated          : Sun 15 Aug 2021 05:45:43 AM CDT
Repo-baseurl       : https://sjc.edge.kernel.org/fedora-buffet/fedora/linux/releases/34/Modular/x86_64/os/ (69 more)
Repo-expire        : 604,800 second(s) (last: Sun 15 Aug 2021 05:45:43 AM CDT)
Repo-filename      : /etc/yum.repos.d/fedora-modular.repo

Repo-id            : hashicorp
Repo-name          : Hashicorp Stable - x86_64
Repo-updated       : Thu 12 Aug 2021 11:51:10 AM CDT
Repo-pkgs          : 384
Repo-available-pkgs: 384
Repo-size          : 12 G
Repo-baseurl       : https://rpm.releases.hashicorp.com/fedora/34/x86_64/stable
Repo-expire        : 172,800 second(s) (last: Sun 15 Aug 2021 05:45:44 AM CDT)
Repo-filename      : /etc/yum.repos.d/hashicorp.repo

Repo-id            : updates
Repo-name          : Fedora 34 - x86_64 - Updates
Repo-revision      : 1628987764
Repo-updated       : Sat 14 Aug 2021 07:55:01 PM CDT
Repo-pkgs          : 16,283
Repo-available-pkgs: 16,283
Repo-size          : 29 G
Repo-metalink      : https://mirrors.fedoraproject.org/metalink?repo=updates-released-f34&arch=x86_64
  Updated          : Sun 15 Aug 2021 05:45:44 AM CDT
Repo-baseurl       : http://mirror.siena.edu/fedora/linux/updates/34/Everything/x86_64/ (50 more)
Repo-expire        : 21,600 second(s) (last: Sun 15 Aug 2021 05:45:44 AM CDT)
Repo-filename      : /etc/yum.repos.d/fedora-updates.repo

Repo-id            : updates-modular
Repo-name          : Fedora Modular 34 - x86_64 - Updates
Repo-revision      : 1628299260
Repo-updated       : Fri 06 Aug 2021 08:21:18 PM CDT
Repo-pkgs          : 2,731
Repo-available-pkgs: 0
Repo-size          : 2.7 G
Repo-metalink      : https://mirrors.fedoraproject.org/metalink?repo=updates-released-modular-f34&arch=x86_64
  Updated          : Sun 15 Aug 2021 05:45:43 AM CDT
Repo-baseurl       : http://download-ib01.fedoraproject.org/pub/fedora/linux/updates/34/Modular/x86_64/ (67 more)
Repo-expire        : 21,600 second(s) (last: Sun 15 Aug 2021 05:45:43 AM CDT)
Repo-filename      : /etc/yum.repos.d/fedora-updates-modular.repo
Total packages: 85,038