Try to understand the whole concept by reading the complete whitepaper of the project.
Then check their hard-cap (if they have set any) that will the expected amount really be complete enough to satisfy the needs of the project's expenses?
See if they are really providing some (real) updates during the beginning of their project as well as remain active on all of their social media that they handle. Check if they are really getting some attention from the users who are willing to invest in such programs.