

Navigate to the Apple Watch section on the Apple Online Store.
Scroll down to the section that reads, "Pick your favorite Apple Watch models. And try them on." Or, go directly to the concierge page.
Click on "schedule a try-on appointment."
Select a state.
Select a store.
From the available list, find a store near you and click on "View available times." You can choose from Sport and Watch appointments, or Edition appointments.
Sign in using your Apple ID and password.
Find an available time that fits your schedule (as of 7:00 A.M., there were no available appointments at my local Apple Retail Store for launch day).
After you select the time you want, click "Make Appointment."
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Article Link: How to Schedule an Apple Watch Try-On Appointment