I forgot my Apple ID

Click->If you forgot your Apple ID password - Apple Support

Click->If you forgot your Apple ID - Apple Support

Click->If you forgot the answers to your Apple ID security questions - Apple ...

See:If you forgot your Apple ID  https://support.apple.com/en-us/HT201354  and

See If you forgot your Apple ID password https://support.apple.com/en-us/HT201487

You also can use Having trouble signing in/iForgot

 https://iforgot.apple.com/password/verify/appleid 

You also are likely to need to See If you forgot the answers to your Apple ID security questions https://support.apple.com/en-us/HT201485

Note that if you end up not being able to answer your security questions, then we will be unable to help you unless you. have an extenuating circumstance. This one may apply to you: You may have the receipt for your purchase of the device with its serial number on it.

if you end up wanting to contact Apple support to discuss any possible extenuating circumstance, see these support options:

Get a call from Apple support to help solve your problem using this link https://getsupport.apple.com/?caller=kbase&PGF=PGF63005&category_id=SC0245&symptom_id=23362

Apple ID Support https://support.apple.com/apple-id

Apple ID account security for country-specific and region-specific help https://support.apple.com/en-us/HT204169

Get Support: We’re here to help https://getsupport.apple.com/. Go through the options to find the best support option.