You mean the US-style credit score, right? Because I can't imagine a country that has banks giving out loans without at least credit worthiness analyses that are essentially credit scores, but lazily computed. And lazily-computed credit score is still credit score. E.g. in Poland, we don't have "credit score", except that the bank will happily calculate it for itself whenever you ask for a loan, which means we have to keep our interactions with credits and debts in mind, the same way Americans do.