Fuel or transmission

The car won't start up. It sat outside for two months after being in a rear end accident. The front end of the car was damaged and nothing much was damaged to the transmission or the fuel line. Only damaged that was done was to the radiator, bumper, and front head lights. We checked the battery and the battery was bad but we got a replacement and everything electrical works. So with that all being said, that limits down to just the fuel and something being wrong. Is there anyway that some liquid could've frozen up in the gas pipeline and gas isn't getting pushed through to the engine block? Does this sound correct? Any suggestions? Please respond back soon. Thank you.