"How to detect scam token on Binance Smart Chain"
If it's on Binance Smart Chain, it's a scam.
IMO, I think it was a very shallow observation, I dont know if you really mean it or it's just a sarcastic notion but all I can say is not all projects on Binance Smart Chain are scams many are still good, and performing well. and one more thing scammers are not settled on a specific blockchain they are everywhere even in Ethereum there are many scammers too so it's very unwise to tell that if it was on BSC it's a scam.
Binance Smart Chain is really attracting a large number of developers and users thanks to its cheap and fast transaction costs compared to ETH. BSC is one of the fastest growing blockchains. So it will not be difficult to understand when scam projects on BSC are quite a lot. But don't equate them all, there are many serious and successful projects on BSC.
Scam projects, they are garbage, so they will develop and creep anywhere, not only on BSC, before when there was no BSC, ETH also had a lot of scam projects created.