Binance Alpha Points come from two parts. Balance points scale with the size of your total assets — more assets, a higher tier, more points, but it's capped. Volume points scale with how much you buy in Alpha tokens each day: roughly one extra point every time that amount doubles. Add the two and you get your daily total; hit the round's threshold and you can claim. For the full picture and how to take part, read the Alpha Points playbook.
Two traps to keep in mind. First, there's a rolling deduction: points you banked earlier get clawed back once they pass out of the counting window, so it's not one-way. Second, farming volume costs fees, so it's worth working out the cheapest way to reach the threshold before you start — don't grind volume for one small airdrop. The rules can change at any time, so the threshold and the math follow whatever Binance posts for the current round.