how to forgot a password of lock and mask app in Samsung Galaxy j7 prime

[Android Central Question]

forgot password

 

[B. Diddy]

Welcome to Android Central! What do you mean by "lock and mask app"? Is this a 3rd party app locker app, or the native Private Mode?

In general, you can't recover passwords. You typically have to do a factory reset if you want to set a new Private Mode password.