Making an “ERC20” token but comes out as BEP20 please assist

A person I went to high school with is trying to make a ERC20 token just for laughs. but the code keeps coming up as BEP20. He doesn’t want to use the BSC ecosystem he wants to use the Ethereum Ecosystem

How does one go from BEP-20 to ERC20 In code

For reference he was using Remixethereumorg