Reset my Apple ID password

Change your Apple ID password shows you three options, or to be more precise the same option on iOS, a Mac, and at icloud.com

Following that you will need to sign in on all your devices with your new password and this may require Two Factor Authentication codes. See Get a verification code and sign in with two-factor authentication

See also If you forgot your Apple ID password

See if you can get a Rescue or Notification email option. Link to contact Apple Support at the end of the 2nd article.

Apple ID - Manage  -     

Apple ID – Forgot Password  *