How to contact Hollywood filmmakers as I want to give them one Good story.?

Answer 1

make friends with people in the industry

Answer 2

If you just send it out your story will be swallowed by the Black hole. If you don't know where to send it you obviously have no contacts.

Try writing it as a novel....most publishers will, at least, have a reader take a look at your story. If you get lucky, you may get it published by a known house. Then you get an agent.

Agents just love to handle books they think might have movie possibilities.