Does it turn over? Does the starter crank? Why did you replace the battery? It takes 3 things for an engine to run, fuel, air and spark. If you replaced the battery let's assume you have spark, but do you have fuel? What I mean is are you getting fuel to the engine? Your question needs a little background info about why you replaced the battery first and what is going on now. Your description here is too vague to make a good diagnosis.