When you start using Metamask, you’ll notice that it only has the Ethereum blockchain automatically included. The Binance Smart Chain network needs to be added to Metamask before you can transact with BSC tokens.
To connect Metamask to BSC, you can use this step-by-step guide.
N.B. In the ‘Network’ section, the chain details that you need to use are:
Network Name: Smart Chain
New RPC URL: https://bsc-dataseed.binance.org/
ChainID: 56
Symbol: BNB
Block Explorer URL: https://bscscan.com