iPad will not charge.

If your iPad has a Lightning port get a bright light and a toothpick and clean out the port. (Don’t do this with a USB-C port, which shouldn’t have a dirt problem).

Also, try a different power source and cable.

You're not communicating with Apple here, so no one here can make an appointment for you. These are user-to-user forums. You need to go to the website of the Apple Store you wish to go to and make the appointment via the link you'll see there.

Regards.