I divide the airdrops into three kinds.
1. Tokens appear on your wallet and you don't do anything specifically for this. Certain conditions must be fulfilled. For example, if you have a certain coin, then you get an airdrop. Sometimes this is quite useful. So I accidentally got game tokens for one online game.
2. Filling out forms to participate in the airdrop. Basically, in good projects, registration ends up instantly. And shit tokens you will never even get.
3. Distribution of airdrop to investors or potential investors. This is the most profitable in my opinion.