i cant connect to app store and i cant open my icloud or apple id in my iphone 6 plus it says i have to change the country

Are you using the Bahraini iTunes store?

You can only use the store for the country where you are lagally resident. It appears that your phone was set up in Bahrain.

ASC - Late 2012 Mac mini, macOS 10.14.6; Watch, series 3 cellular, watchOS 5.3; iPad Air 2 & iPhone 8+, iOS 12.4; TV 4th Gen, tvOS 12.4;  HomePods, audioOS 12.4 and Airport Express w/ Airplay 2