I had my 1994 ford mustang towed and now it wont start how do I fix this

You first need to find out why it will not start, so no generic answer is of any use. Does it have fuel pressure? Spary starting fluid into the engine air intake, does it start and stall? If yes then the fuel pump may be defective. If the fuel pressure is ok then check for fault codes as this engine is computer controlled, to do this follow the link. Get Ford OBD1 Trouble Codes in Under 10 Minutes