Localization in Xcode info

I have now finished my app I am learning with for different translations in different localizations and have placed the strings in the StringCatalog. I still have one question about the localization: In my project info I have added the item Localization and added the value German. So far I have told the AppStore that the app language is German. Can I delete this localization item in the info now? Or what does this entry do (see screenshot)?

Due to the different languages in the StringCatalog, I now have the languages of the StringCatalog in the project settings under Localizations. This is always followed by Resources 0 Files Localized. What is this all about?

Localization in Xcode info
 
 
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