Can I turn off the camera shutter sound in Iphone 12 Middle East version (with face time ) I am buying from noon.com

If that phone was made for Japan or a country which prohibits the shutter from being muted, you will NEVER be able to mute the camera shutter on the phone. And that is regardless of where in the world the phone will be used.

No.

The shutter can't be muted on devices made for Japan or other regions.

It only matters where the device was made for and not where it is used.