If you mean that the drum wrap is coming off, then there should be tons of info around here as to how to glue it back on. Or you could just put the head back on, loose wrap and all. My first drums were cheap and the wraps sucked, so I ended up taking them all off and wrapping them with fur.
If you mean that the little decorative wrap on the hoop came off, then I really wouldn't worry about it. A spot of rubber cement should do it.
If you mean that one of the wooden plies of the hoop is separating, then that's more serious, and you'll need some wood glue and lots of clamp-age.
Also without head on your bass drum, the shell is under way more stress. Those toms are heavy and the shell is weak without hoops and heads keeping it round.