Binance Megadrop points usually have two sources. One is locking BNB — lock more, and for longer, and your base score is generally higher. The other is completing the listed Web3 tasks, which often add a multiplier or bonus on top. This tool boils that down to "lock base score × task multiplier," purely so you can see the direction. Exactly how many points each part is worth and how the multiplier is set follow Binance's announcement for the current round, and the rules can differ from one round to the next.
To really understand how to take part, the minimum BNB you'd need to lock, and what locking costs you, read the Megadrop walkthrough, how much BNB Megadrop needs, and the opportunity cost of locking BNB. One reminder: the result is illustrative points, not dollars. What a token is worth rides on its opening price, and a weak open isn't rare — don't treat an estimate as a sure thing.