I was asked to change a clients email from their domain over to Gmail and the instructions were not too clear.
During the process I found this site useful to view and check the MX records, after I changed them in the server cPanel:
https://toolbox.googleapps.com/apps/dig/
In the MX section you would just enter mydomain.com
to view the MX records.
See Troubleshoot MX records - Google Workspace Admin Help for more info on this.