The best thing you can do again is to continue your research and find another good project. In any case, when someone offers an ICO or you see any advertising, follow your project carefully
Even if you carefully select and research through out a huge number of good project you will only see a couple of it as a legit ICO. most of the Ico nowadays are purely scams that revolves on airdropping their massive amount of token and just a pump and dump scheme of its market.