Finish it. Anything can be salvageable. Just cut the hell out of it and make it as short as possible. I've shot and edited some terrible films (other people's scripts) that people have actually thought were good!
Even with my own films at the beginning I hated them and wish I could have done so much differently but I was surprised that in the end people actually liked them and they were being honest. Film making will always be an unending learning experience