Here's how to pick up your online order

Complete your shopping online, then at checkout, select In-store Pickup and a store closest to you. Orders are typically ready for free in-store pickup within 2 hours; your order is not ready until you receive your Ready for Pickup notification email. If your store location is experiencing heavy traffic, please allow for more time. Make sure to bring a government-issued ID to pick up your order.

To be eligible for 2-hour pickup, orders must be placed between the beginning of the business day and 2 hours before store closing. During U.S. holidays, stores may be closed or have different hours. Not all items are available for in-store pickup. If your product is available for pickup, you'll see that option before you finish your order.

Find other stores nearby that have online pickup available here:
https://www.att.com/maps/store-locator.html