ERC20 tokens are on ethereum blockchain and transferring funds to such ERC20 will require ethereum address, BEP2 is for binance tokens, if you issue a token on binance chain, the binance chain is BEP2.

ERC20 tokens addresses start with 0x which are ethereum addresses
Binance chain token addresses start bnb which are binance coin addresses

But to bridge ERC20 with BEP2 (binance chain) is the reason for BEP20 (binance smart chain) which have its addresses starts from ethereum (0x-prefix) addresses.