Recovery
Can I recover my Apple ID with out knowing my email account
Apple Watch
Question marked as
Have you tried every email address you have ever used? You need the address to recover the account.
See if you can recover the ID/password.
Apple ID - How to find your Apple An iCloud e-mail address is an Apple ID.
If you have a device, have you looked at Settings/Your Name/iCloud? On a computer, check System Preferences/iCloud (Apple ID for Catalina).