I forgot my Apple ID gmail, I just remeber with my password apple id

Marking your own post as Solved may prevent others from trying to help because they think you have fixed your problem.

See if you can recover the ID/password. An iCloud e-mail address is an Apple ID. Use every email address you can think of.

Apple ID - How to find your Apple  -  

Apple ID - Find  -     

Other ways to find your Apple ID

You can check to see if you're signed in to the App Store, FaceTime, or Messages on your iPhone, iPad, iPod touch, or Mac, or check to see if you're signed in to iTunes for Windows on a PC. You can also go to iCloud.com or appleid.apple.com and see if your Apple ID prefills on the sign-in screen.   

Did you find the ID using the steps I posted above?

See if anything here helps.

Watch - Unpair and erase your.   

ASC YouTube for how to unpair and reset your Apple Watch | Apple Support