Change apple I’d password

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. Link to contact Apple Support at the end of the 2nd article.

Apple ID - Manage            

Apple ID – Forgot Password            

See the Apple Support article(s) below.

Face ID on your iPhone X - Get help with   

Face ID not working

Face ID not working' problems on iPhone

Fix iPhone X Face ID Not Working

Face ID Not Working