If you have a Quadpay account, you can make a payment at any Walmart store. However, as of 2022, Walmart does not accept Afterpay as a "Buy Now, Pay Later" service.
To make a Quadpay payment in-store or online, the first thing you should do is download the Quadpay app and locate the Walmart store inside the app through the search function. Then, you can add items to your cart if you are purchasing online through walmart.com and pay.