Hi, i can’t login to my account due to incorrect password. If i erase wallet and set up new one can i restore all my BNB i have in there?
Welcome to the MetaMask Community @cjt!! 
Yes, you will need to uninstall and reinstall your MetaMask wallet. You will then be prompted to enter your seed phrase to restore your account and set a new password. Do NOT do this, if you do not have your seed phrase.
Remember: NEVER give your seed phrase to anyone for any reason. We, MetaMask Support, will never ask for it.
Once you’ve restored your wallet, you can add the BSC and your custom tokens to view your balance.
What if a person have not enabled the sees phrase. Please help,