You may skip these steps if you already have BTC in your spot wallet on Binance cex. Binance supports 1:1 conversion of btc to btcb, so withdrawing btc to EVM wallet (Prefer Metamask) will get btcb directly.
Enter Solv Dapp - SolvBTC:https://app.solv.finance/solvbtc
Connect wallet and switch to BNB Chain.