To verify account on the Cash app, you have to enter the full legal username that you use in your bank account, date of birth ( make sure you are 18+), last four digits of SSN. Generally, these pieces of information are sufficient to verify an account, but if they ask for more, then you have to provide all. For more use Cash app help.
https://www.gonetech.net/cash-app-customer-service/
https://www.gonetech.net/cash-app-customer-service/