The US credit score has nothing to do with income. In Europe if you have good income you can get a credit. As an immigrant to the US with no US credit history that is near impossible. In the US you start with the worst possible credit score and need to take on debt to prove that you are worthy to take on debt, which is crazy. As a counter example in Germany you are basically born with the perfect credit score, and you can only make it worse (e.g. by not paying back a loan).