The idea of a single button to unlock every item in your permanent inventory is a common topic in the community, but it comes with several caveats:
The use of unlock all tools can be seen as unfair to other players who choose to play by the rules and engage with the game's intended progression system. Rocket League Unlock All Tool
Instead of risking your PC health, your personal data, and your precious inventory to a permanent ban, engage with the game legitimately. Use the Rocket Pass, complete challenges, and if you are on PC, explore BakkesMod for cosmetic fun that stays on your screen only. The idea of a single button to unlock