I want to know how to find airdrop or ICO project...how to check scam or real and how much profit airdrop can make...and if u have experience about airdrop or ico things can u share this exp in here:

Any ICO checker websites will do. You can't determine if the project will be a scam or not unless they are showing obvious scam traits right at the beginning. I'm really amazed that there are still people who like to follow projects holding ICO. There are still good projects out there but we need good research to catch those.
Your first stop at doing research is by engaging with your fellow followers on their social media platforms like Telegram. See others' feedback and reviews but be vigilant at those users who are just there to shill the project.