These are just my personal notes as I was working through the New to ServiceNow training modules.

In GitHub, select your profile > Settings > Developer settings > Personal access tokens > Fined-grained tokens and create a token. This should return something like this.

github_pat_123456789ABCDEFG123456789ABCDEFG123456789ABCDEFG123456789ABCDEFG123456789ABCDEFG12

In ServiceNow, select All > Connections & Credentials > Credential. In the upper right hand corner, select New.

Select Basic Auth Credentials.

Complete the form and select Submit.