In the United States you start creating your credit "time line" when you open an account, a credit card or when you make a loan, among other options.
To build good credit and have a good name, it is necessary to get into debt and pay it off on time. There are also a series of rules to be followed for credit to grow. So, if you have plans to do business or live in the United States, it is very important to prepare for the Credit System. Many people who move to the country end up breaking their Credit Score (their score) because they don't really know how it works. If you want to buy a house or a car with very low interest, it is important to have a very high Credit Score. Since the higher your score, the lower your interest. Nobody starts with high American credit. It doesn't matter if your credit in Brazil is excellent. Arriving in the US, just like any American, the immigrant has to work hard to reach the so-called “High/Excellent Credit Score”. US financial institutions will not care if you have an account in the blue for the last few years in Brazil. As you acquire debt and make payments on time, your credit builds up little by little. Even if you pay all your bills on time, but by debit card, you won't be able to build an American credit history. In addition, even in order to have an approved credit card, you must already have credit. It seems that in the end, the more debt you have (and pay it off on time) the better your score will be. Therefore, the mentality of “no debts” to pay, will not bring you any benefit. But plan well, because if the debts you make are not paid on time, your credit can go from “excellent” to “poor” very quickly.