Apple iPhone 8plus. Need Apple ID and pw

If you forgot the Apple ID password, enter the Apple (iCloud) ID, and click Forgot Password. See if you can get a Rescue or Notification  email option if necessary.

Apple ID - Manage            

Apple ID – Forgot Password            

Do you have a Rescue or Notification email address on the ID? The reset password email could be sent to that email address.

Have you tried contacting Apple again?

If you have 2 Factor Authentication enabled, you can use Account Recovery. The Recovery Process is an automated process and the length of time it takes can vary a lot. Apple ID Support can only answer your questions. They can't intervene in or speed up the process. The article below has some suggestions to shorten the the time the process takes.

Apple ID - Recover your Apple ID with two-factor authentication account recovery.   

You are welcome.

how do you solve your problem? i have the same problem