How can i make when player is next to enemy player die/

If you know nothing about programming (as it seems from your previous question), you need to supply more detail. Eg: Do you have a player? An enemy? What do you mean 'next to' (touching or within a certain range)? Or, really, go do tutorials.

If you do know scripting basics, then use ray casting, distance check or collider + OnCollision etc. If you DO know basics, I will explain how to do one of those - it won't be everything you need, you must know the basics.

I know the basics btw in the other question i made the script by my self.Any way, i have player and the enemy(ghost) and i want when ghost touch the player, player dies. Could you please help me? Thanks.