To start, make sure your Metamask wallet is set up for Binance Smart Chain (BSC). You can follow this link for a guide on how to set up Metamask to do so.
Before proceeding, make sure you have some BNB in your wallet to cover associated transaction fees when using FOC.
Go to TheForce.trade and Connect Wallet
Click Approve and Cofirm in wallet
Enter amount , Click Deposit and Cofirm in wallet
After success, they will be in Deposited