Arranging a visit to the store to set up Ipad, Iwatch, and Iphone

Device setup is straightforward - and generally does not necessitate a visit to an Apple Store. However, if purchased in-store, staff will usually assist with initial setup before you leave the store (if asked).

If you need additional help, you make make an appointment with the Genius Bar:

Genius Bar Reservation and Apple Support Options - Apple

If you need assistance with setup of your Apple Watch - or have a problem with which you need help - perhaps try asking for help within the Apple Watch Support Community:

Apple Watch - Apple Community

Here you should find many contributors with a specific interest in, or knowledge of, Apple Watch.