If you want to know about the Cash app Balance then, either you can contact the Cash app support team or you can go to the Cash app official site. But the atm can not show you your Cash app balance. When trying to check Cash app balance at atm, it will only show a zero balance in your Cash app account. Make sure you click on the link here to learn more about the Cash app balance. https://www.emailsupport-contact.com/blog/check-balance-on-cash-app-card/