Depends on the (GAS Gwei & Gas Limit).

Anyway, In the internet you can use gas fee calculators all chains like ETH, BSC, Polygon have the same calculation fee-based Gas Gwei & Gas Limit. One example service is : https://coincost.top/en/eth-gas-calculator even this tool is for ETH but they have the same calculation just change for "ETH" to "BSC".

Scenario calculation, I set up 100 GWEI with a 21000 Gas Limit and the prediction fee is 0.00021 ETH. Just change it to 0.00021 BNB.