I have some doubts. If I leave it for more than 100 days and during this period there are new coins released in lauchpool, will I automatically be participating or do I need to withdraw bnbs?
The launchpool of the coins will be within a certain period, Binance announces this. You can hold a BNB coin in order to profit from it, but when Binance announces the launch of coins, cancel the hold and turn it into a coin launch hold.