my car wont start

Haven't given anyone much to go on here. You have to start with some good old fashioned troubleshooting. Is the engine turning over (cranking)? If Yes, the battery and starter are good. Does it have spark? Pull a plug wire and test. If not, you have an ignition system problem. Does it have fuel? Starting fluid is the easiest way to check (remove air filter and spray a bit in to see if it starts). Does it have timing or compression?

Thanks im waiting on the dealer to tell me something my fuel was low but no light was on I had a least a quarter tank. it was fine all yesterday then tday it just cranks sound like it will start then nothing