NFTs you purchase will be distributed after the game's release. After purchasing, an "SBT" (Soulbound Token) acting as a voucher for your NFT will be sent to your wallet.
SBT (Soulbound Token) is a non-transferable, non-sellable token.
To check your SBT:
Connect MetaMask to OpenSea or TofuNFT.
Access your profile on these sites.
After the release, once you receive the NFT in your wallet, you can connect your wallet to the game and import the NFT to see it in-game.