I have Tether USDT - ERC20 in trust wallet and want to convert my funds into Bep20. I have read about using binance to convert the funds but I’m not sure how to do it. I will be bringing my funds back into trust wallet and use pancakeswap.
If Binance.US supports withdrawal via BEP20 (BSC), then you can deposit that supported asset to them.
Else, the only way is to deposit the supported ERC20 token to Binance.US > trade it to BNB > withdraw it as BEP2 > cross-chain swap it to BEP20 (guide: How to make a Crosschain Swap on Trust Wallet) > buy the BEP20 token that you want via Pancakeswap or other DEX.