You either don't have fuel or don't have spark, possibly both.

Pull a spark plug wire and use a phillips head screwdriver to short it out to the block while cranking the engine over. If there's no sparc there's your problem, start tracing it back.

If you have spark then it's probably a fuel issue.

It could also possibly be a fried computer.

There's way too much missing information to form a very good opinion.