Hi @grymberg you need a bridge from Binance Smart Chain to Ethereum…
Or try this page: https://fixedfloat.com/
Select SEND: Ethereum (BEP20) 
RECEIVE: ETH
PS: You need a little amount BNB (0.50 - 1$).
Binance Coin (BNB) is used to pay for transaction fees on Binance Smart Chain.