App Store completely different reviews and stars for the same app???

You can only rate apps that are available in your region or country, since the content of the AppStore is country-specific.

In your case, users in the USA may rate the app different than the users in the EU.

yuri_radaelli wrote:

You are right, thank you!

If I see a friend with a Apple Store with address in United States I can see the same stars and reviews!

While I did not help with the question and kudos go to Ingo2711 for providing the correct answer, I just wanted to give you a big thumbs up for confirming that your question has been answered to your satisfaction. Many times we will see an answer given with no confirmation from the OP. When other users have the same question and find this thread on the site, it is very helpful to have confirmation that the question has been resolved.

You're welcome 🙂