Binance has capped the BNB supply at 200 million tokens/coins. During the initial coin offering (ICO), 100 million Binance tokens were released to the public, while 20 million were allocated to angel investors and 80 million to the founding team- the current total supply is lower. Binance uses one-fifth of its profits to repurchase and permanently destroy, or "burn," the Binance coins held in its treasury. This act has frequently been performed every quarter, and it will continue to do so until it buys back and destroys 100 million Binance coins, 50% of the total supply.
To mine Binance Coin using the Binance Pool, you have to log in to the official Binance Pool website and change to ETH in the upper right corner. On the Dashboard and Miner Management page, one can check its earnings and miner status. One can also use the Binance Pool App. Although it is possible to mine Binance Coin on a computer, it's advised to use an ASIC mining setup.