Hi @Swiatekt1984, first of all, make sure that you are accessing Metamask with your Trezor: https://wiki.trezor.io/Apps:MetaMask
Then in Metamask, please proceed with the following custom network settings:
- instead of Main Ethereum Network, select Custom RPC
- as Network name type in Binance Smart Chain
- as New RPC URL type in https://bsc-dataseed.binance.org/
- as ChainID (optional) type in 56
- as Symbol (optional) type in BNB
- as Block Explorer URL (optional) type in https://www.bscscan.com
In the end, add a custom token as per this manual.
If you want to transfer the tokens out (eg back to the exchange), you also need to have some BNB on the very same address that will be used as a Gas.