My son play with my iphone and it stopped and dead what should i do i cant open it throw itunes acc or throw the phone itself?

Without any further info, I suggest the best course of action is to make an appointment at the Genius Bar in an Apple Store near you. If that is not an option contact Apple Support online. Either way:

Genius Bar Reservation and Apple Support Options - Apple

You may also try:

If your iPhone, iPad, or iPod touch won't turn on or is frozen - Apple Support

Take it to the Apple Store. Or please describe the issue more clearly.

hadeel118 wrote:

i tried the dealer

i tried to unlock it

i tried everything

Everything is a lot. Please be more specific with the troubleshooting steps you have taken.