If you want to browse the URL of a particular license, or to look at a list of licenses, you may use the following commands:
Choose a license from a completion list to browse its URL using
browse-url function (see Browse-URL in The GNU Emacs
Display a list of available licenses. You can press P key there to display packages with this license in the same way as M-x guix-packages-by-license would do (see Package Commands).
Open …/guix/licenses.scm file.
Open …/guix/licenses.scm and move to the specified license.