I was in a accident and the driver wouldn't give me his information and he was driving a u-haul rental and he went to jail

Get a copy of the accident report from the responding police agency. Your insurance company should help you with collections. If he is at fault, he or his insurance company should pay. If he has no insurance or the damaged exceed his coverage, he would be liable personally.
He may not have rented the U-haul or he could have had an outstanding warrant, there may not have been anything wrong with his driver's license.

Get a copy of the accident report from the responding police agency. Your insurance company should help you with collections. If he is at fault, he or his insurance company should pay. If he has no insurance or the damaged exceed his coverage, he would be liable personally.
He may not have rented the U-haul or he could have had an outstanding warrant, there may not have been anything wrong with his driver's license.

Could be the truck had been reported stolen and he "rented" it from someone who had illegal possession of it (in which case there may not be any insurance), or it could be he had a warrant for his arrest that was totally unrelated to your wreck. You should definitely get your insurance company involved, and should get a copy of the accident and arrest reports, and if your insurance company tells you something that doesn't make sense, you should run it by a lawyer.