The Privacy password is used to unlock App Lock, Hide apps, and Private Safe. You can set the security question and the recovery email to recover your privacy password if you forget the code. And you can connect your Google account/phone number to the privacy password.
Setting Path:
realme UI 6.0 & 5.0: Settings > Security & privacy > More security & privacy > Privacy password > Enter/ set the Privacy password > Recovery email.
realme UI 3.0 & 4.0: Settings > Password & security > Privacy password > Enter/ set the Privacy password > Set Linked account > Sign in with Google/ Use phone number.
realme UI 1.0 & 2.0: Settings > Fingerprint, face & password > Privacy password > Enter/ set the Privacy password > Set Linked account > Sign in with Google/ Use phone number.
realme UI R & Go & S & T & U Edition: not support