Credits are the most important currency in the game. They are harder to get than tokens. You can use them to buy cars, upgrades, and pro kits. There is also a Super Racer Kit Box that you can buy with credits. You can’t use credits to buy any vehicle, as there are cars to unlock only with tokens. You can earn credits by finishing races, or by winning time-limited events.By completing vehicle collections you will get a specific amount of credits.