Keyboard
Hi! My "T" botton on the keyboard is not attached anymore, is that something apple can repair? If so what do I need to do and how much would it cost?
We can't tell you if they can or will repair a keyboard. Which Apple keyboard specifically is it? Smart Folio Keyboards for iPad have non removable keys.
Assuming it is an actual Bluetooth Keyboard you purchased from Apple schedule an appointment at your Apple Store Genius Bar and show it to them.