Forget my apple id

Hello!

I'm sorry to hear you're having issues with your Apple ID on iPhone.

If you forgot your Apple ID, please go here to find your Apple ID: https://iforgot.apple.com/appleid.

If you forgot the password for your Apple ID, please see this support page: If you forgot your Apple ID password - Apple Support.

If you need help with your iPhone's passcode, please see this support page: If you forgot your iPhone passcode - Apple Support.

I hope this solves your problem!

Check this article about it:

If you forgot your Apple ID email address or phone number - Apple Support