Cash App refunds stolen money but as long as you report the cash app card stolen or report the fraudulent transaction right away or right after you realize it.
The cash app will then force a charge back on the fraudulent transaction and then you get your money back.
If you think you've been scammed on Cash App, you can dispute the charge through the app by selecting the transaction and tapping on “…” —> Need Help & Cash App Support —> Dispute this Transaction.
The Cash App team will investigate your claim, but there is no guarantee you will get your money back.