You already saw how to easily delete your Cash App account. But you can also permanently delete your account and your personal data by getting in touch with the Cash App support:

Click the profile icon.
Select "Support."
Choosing "Something Else"
Select "Account Settings"
"Contact Support" and "Delete Your Personal Information" should be selected.

You can use this form to request that all of your personal information, including your Cash App account, be deleted.

You must move the funds out of the Cash App in order to close or delete your Cash App account safely. You must also transfer any stocks or bitcoin you may have.