Country code

See the rules that govern you country choice. Changing your Apple ID country or region https://support.apple.com/en-us/HT201389 See this heading especially What to do before you change your country or region.

 Use this link in the document if you need to View your Apple ID balance https://support.apple.com/en-us/HT202359

If you can't complete any of the steps, can't change your country or region, or you have less store credit than the cost of a single item, contact Apple Support.

And you also can contact iTunes worldwide support via text or chat using this link https://support.apple.com/choose-country-region/itunes. At the bottom of your screen, use Tell us how we can help to select among support options. You should be able to get telephone or chat support.

Are you saying there isn't a country code for the country you live in that you can use with your Apple ID? Apple doesn't have App Store/iTunes in all countries. If that isn't what you mean, more information would help.

See the Apple Support article(s) below.

App Store, iTunes Store, and Apple Books availability.