First you need to know what is wrong with it before you can fix it.
Unlock it.
To fix a car door that is sprung due to a bent or damaged hinge, the best thing to do is replace the hinge. If the hinge is welded and not bolted to the vehicle, the entire door will have to be replaced.
get a hammer
spray hinges with wd40
250.00
the car door must be open almost all the way, for the gas door to release
Remove the door panel, find and repair the lock linkgage.
try with rope or wire .....get to shop and fix
Hey Amber==It is hard to say what is wrong with the door. It depends on what kind of car it is on but I would take it to a mechanic who knows about doors. GoodluckJoe
LS or town car
The easiest thing to do would be to bring it to a local mechanic. They will be able to figure out why the door will not open and fix it without further damaging it or the car.
remove door panel to check it!!