Once you completed the request a refund process if your Cash App Payment Failed then you should wait at least 48 to 72 hours. The cash app will look at your request and also look at other points related to your transaction after that it will process your payment. You will get a refund either in your Cash app balance or bank account.
https://www.experts-support.com/blog/fix-my-cash-app-failed-for-my-protection