Apple - How to change the language of the App Store to be able to see accurate star ratings?

It seems to be possible for some countries, but most countries only have one (or few) native languages.
The table at the bottom of the above link lists which countries support which languages in iTunes.
Some oddities:

• Belgium supports both English and French (but not Dutch, which is one of their native languages).
• The Netherlands supports only Dutch (but not English).
• Switzerland supports English, German and French (but not their native languages Italian, and Romansh).
• Germany only supports German (but not English).

Go figure!

Note there have been many complaints about this on the apple forums already.

--jeroen

iTunes always sets itself to the country your credit card belongs to. If you insist on the US store then you must use a US credit card.

You can't set this up directly on your phone. You must use iTunes on your computer to change this:

Click on your email address in the top right of iTunes to get to your account details, then click the "change" button next to your "Country/Region". Select a country for which you have (access to) a credit card. iTunes will ask you for credit card information when you save this country setting.