Does BNB use BEP2 or BEP20?

Binance Chain adopts the BEP2 token standard, while Binance Smart Chain uses the BEP20 standard . As mentioned, BNB acts as fuel for both.

Binance Chain BNB (BEP-2 format) was launched by Binance in April 2019. Its primary focus is to facilitate fast, decentralized (or non-custodial) trading.12 Tem 2021

When your wallet offers to transfer tokens using these standards, it simply means that the transaction will be executed using the respective platform — BNB for BEP2 , BSC for BEP20, or Ethereum for ERC20.