I rarely participate in airdrops but what often happens is that my wallet is sent an unknown token. Usually tokens are sent because they have transacted on Dex exchanges and sometimes the airdrop value is quite decent
This called with dusting attack token and now happen with your bsc address, when you see value is higher when try to sell on pancake never approved and sell it because this scam coin, many kinds of scam coin from ever coin, mneb and many other else. when you approved for selling dusting attack token you have give access for scammer to log in in your trust wallet account, better never do anything with dusting attack coin and keep it selft.