1. There's no USDT token that run in Binance network (BEP-2), but there's USDT token that run in Binance smart chain network (BEP-20) since you're mention Pancakeswap, you're mistaken to write BEP-2 instead of BEP-20 since this swap platform only accept BEP-20. Yes you can, but you need to import the Bitgert coin first from Coinmarketcap, make sure you're check the contract first.
Anyone can create a BEP20 token on Binance Smart Chain with any name, including creating fake versions of existing tokens and tokens that claim to represent projects that do not have a token.
If you purchase an arbitrary token, you may be unable to sell it back.
2. Just use blockchair or any other blockchain trackers.