I believe what you sent to your BTC address was USDT, right? You can recover them by exporting the specific address private-key and importing it in a USDT compatible wallet. But this could compromize the wallet as the private-keys should never leave the device, and exposing them could be dangerous.
If you still want to continue:
1. Go to
https://iancoleman.io/bip39/ (download the source and run offline for better privacy)
2. Write your Trezor seed in the "BIP39 Mnemonic" field.
3. Scroll down and you should see all your BTC addresses.
4. Find the address where you sent the USDT to and copy the private-key.
5. Go to
https://www.omniwallet.org/6. Create a new wallet.
7. Go to My Addresses -> Add Address -> Import Address with Private Key -> Paste the private-key from step 4.
8. You should be able to see the USDT in the address and spend them.