Steering wheel turn all the way around no control

It came loose somewhere. If you have rack and pinion steering, down at the bottom of the steering column (just below the floor pan-where it sticks out from underneath) there is a u-joint type coupling that slips over a stub shaft out of the rack and pinion gear. It may have come loose here. The steering column joint is held tight to the stub shaft with a "pinch bolt" that acts like a clamp. There may be a rubber boot that you have to peel back or push back to see the joint.

If you have a front wheel drive vehicle, almost certainly you have rack and pinion steering. Almost all vehicles have switched to that, rather than the old steering box on older cars.

If your steering wheels turns all the way but your wheels don't:
This would have to be either a broken rack and pinion(steering gear) or the shaft between the rack and pinion and the steering wheel would have to be broken. This would need to be visually inspected to be sure which is the problem.

I would have to guess that your steering wheel is no longer connected to the rack (as opposed to something in the rack breaking). My best guess is that your steering column shaft snapped.

They can be replaced, and the necessary parts are sold, but it's not the easiest thing in the world to replace.

stick your head down under the dash on the driver's side where the brake and gas pedals are, and look up at the steering shaft (can't miss it). Now turn the steering wheel. Does that shaft turn?