Please help me how to make photo taking lighting effect… 
I need script please help me
You mean a flash like in photography?
Just create a light and add to it as component a script that turns the light on and then off after some amount of time. Make this logic trigger for whatever reason you need like when button is pressed.
I made like that but I need script…I tried some scripts but it didn’t work
Post the script you’ve made and we’ll help you improve it so it works. No one’s writing an entire script for you.