The first is to buy your credits outright. Each credit is Rocket League Items equivalent to $0.01, so 500 credits runs $5. You can purchase 500, 1,100, 3,000, or 6,500 Rocket League credits for $5, $10, $25, or $50, respectively. The more expensive bundles still have the same base value per credit, just with a little extra thrown in.
There are other ways to earn credits, but buying them outright is usually the best option. Rocket League‘s in-game economy isn’t quite as balanced toward the player as games like Call of Duty: Warzone and Magic the Gathering: Arena, so the next two ways to get credits, although viable, are both net negatives when it comes to the credits you have.
Outside of buying them, you can also earn credits through the Buy Rocket League Items Rocket Pass, Rocket League’s version of a battle pass. The Rocket Pass costs 1,000 credits, or $10, and it will reward you with cosmetic items, XP boost tokens, and credits as you rank up. You’ll earn 100 credits every 12 tiers up to tier 60. After that, you’ll earn 100 more credits at tier 67 before the Rocket Pass tops out at tier 70.