How do you make a spectate script?

I always wondered if how to spectate a player. Please help.

You have to change the camera subject locally. You haven't presented a script or some sort of attempt at a script, so I can only tell you the basics.

This is not a request site. Scripting Helpers fix scripts that you have problems with, not make the scripts for you. Try the Scripting Helpers forum on ROBLOX.