How to add BNB on metamask
https://academy.binance.com/en/articles/connecting-metamask-to-binance-smart-chain
https://academy.binance.com/en/articles/connecting-metamask-to-binance-smart-chain
Binance Academy
Connecting MetaMask to BNB Smart Chain | Binance Academy
Ethereum’s most iconic wallet, MetaMask, can be easily tweaked to support BNB Smart Chain. Learn how to get set up at Binance Academy.