I want the domain and email associated with it, But its linked with his other domains, Can it be separated and ten i can become admin and pay separately for it etc?
Yes3 things here1. Where the domain is registered2. Where the site is hosted3. Email (google workspace)You should be able to transfer the domain from the current registrar to your own account at godaddy or wherever you want the domain to be registered. At that time I think you will need to reconfigure DNS so that it continues to point to the correct website and so that the MX records point correctly for email. I haven't done this with google domains though. If you can clarify the answers to the 3 items listed above it might help people point you in the right direction.This might help: https://support.google.com/domains/answer/3251178?hl=en