'Where do you sleep?' is correct, 'where are you sleep?' is incorrect. However 'where are you sleepING?' can be correct if it is talking about an ongoing situation or maybe a future plan e.g. 'We are going on holiday to Spain!' 'Where are you sleeping?' 'In a tent'. 'Where do you sleep?' would be incorrect in this situation because it can only be used if the pattern of sleeping in a certain place has already started.

Hmm. "Where are you sleep" doesn't actually make sense. You can only ask "Where do you sleep?"