There are two ways to get OKB on X1 testnet:
Mint any amount of OKB as needed on Sepolia, and bridge it to X1 testnet
Get OKB directly on X1 testnet with a limited amount (up to 0.2 OKB per day)
OKB and other tokens you receive on the testnet can only be used for product testing. Please be aware that they have no actual value and therefore can't be withdrawn for cash.