The company issued the following statement on the reopenings:
This week we’ll return to serving customers in many US locations. For customer safety and convenience, most stores will offer curbside or storefront service only, where we provide online order pick-up and Genius Bar appointments. Others will be open for walk-in customers and we encourage everyone to check their local store webpage for more information about hours at their preferred location. Customers can also visit apple.com for support by phone or chat.
We are committed to reopening our stores in a very thoughtful manner with the health and safety of our customers and teams as our top priority, and we look forward to seeing our customers again soon.
9to5Mac has a full list of the stores that are reopening at the link below. You can expect many locations to require face masks and temperature checks.