Over the winter our water lines froze for about a month. When they thawed out we had a busted water line and we replaced it. After replacing we didnt have water. We tried unhooking the lines to the well pump and bleeding the pump. Pressure from the pump seemed ok. Hooked everything back up and still no water. So we bought a new well pump and a new pressure switch installed both. I could hear water going into the hot water tank but only hot water comes out of bath faucet. No cold. Pressure in all other faucets are little to no water. Plus the line broke again at the kitchen sink. My husband thinks its airlock in the lines. How do we get the air out of the lines?

you get the air out by opening all the faucets and flushing all the toilets.
if yoy attempt this and nothing comes out, you most likely have debris somewhere or everywhere.
start by removing faucet aerators and shower head/s.

First you find out WHAT the problem is before you start replacing pumps and tanks. WE don't have enough information about what is happening to give a solution, unless we were there to do our own testing.

We bought the new pump because ours stops working sometimes so it needed it anyway. The pressure switch we bought because its usually the problem so we tried it but it wasn't it.