You can reset the Cash App PIN with the help of below mentioned steps:
Open the Cash App on your mobile.
Tap on the profile icon.
Within the profile menu, tap on the option privacy.
Next select change Cash PIN.
In case you had forgotten your PIN, you must tap on 'Forgot Cash PIN. ...
To get a new Cash PIN, you will be sent a verification code.
If you face any issue, contact cash app phone number.