GitLab Runner: Creating a Token
GitLab
The updated GitLab runner registration flow, including where the new token is created and the options to select while registering.
The procedure for creating a token has been updated.

Check the box for running untagged jobs.
Provide a runner description. This is optional but will allow you to identify the runner.
Specify a time, assuming that the 600 second default might be insufficient.

The token that you will need can be found in Step 1.