Binance is a cryptocurrency exchange, one of the largest. You can buy, sell, trade, and hold your cryptocurrency in a wallet there. You can buy Bitcoin, Ethereum, Litcoin, and most cryptocurrencies on this exchange. Although I am against keeping cryptocurrency on the exchanges, I recommend transferring them to a desktop wallet such as Exodus or to a hardware wallet such as the Ledger Nano X.
Binance makes it very easy to buy Bitcoin, for example. Here is how:
Go over to Binance and sign-up for a free account.
Use their easy-to-use interface to purchase. Enter in the dollar amount worth of Bitcoin
Pay via debit or credit card
Your Bitcoin will go into your Binance Bitcoin wallet.