My Apple ID is locked becoz I forgot my Password
How to retrieve my password when I do not see forgot password option on iPad
iPad Pro 9.7-inch WiFi, Cellular
If you forgot the Apple ID (iCloud) 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.