First look at team. It`s good if there are famous people and especially famous devs. Then - understand, what sphere of project? Good if it is FinTech, they usually grows faster.
Study project yourself + see reviews about this project.
I agree you should look at the team, but I do not think it matters if there are famous people on the team. Unless you are meaning famous crypto developers, then yes. I think though that you just need to look at the team's experience and how well rounded they are. You also should loook at how well thought out their idea is. Many ICOs launch with a very loose idea that they haven't thought out. Make sure they have a well thought out business plan.