How do I correctly configure a Swift Package in a project to display localized strings from the package where we have strings Localized?

In your package, create a public value that refers to its bundle :

public let module: Bundle = .module

Then in your app, import your package, so you can access its module and use it in your views, i.e. your Text :

import MyPackage

Text(LocalizedStringKey("some.key"), bundle: MyPackage.module))