If it was a noseleg, damage would be very minor. A main leg would cause problems- severe damage to engine, flaps and possibly wing. However, if it was a 737-200, repair would not be worthwhile. They are simply being run out of service now as and when they crash/get bent/break or develop problems. They are also very uneconomic. They use much more fuel (and noise) than one of the later -300 onwards models for much fewer passengers.