When I want to join a project, I usually look at the level of trust of the campaign manager running it. But on second thought, someone who really intends to promote a scam project can buy / use someone else's account to serve as a campaign manager, making it easy to get the trust of investors and bounty hunters to want to contribute. . So I think, right now campaign manager rankings are no guarantee a project will succeed.
Before I join the campaign, I check whether there really are such people with such names and surnames that are indicated under the photos of developers. Scammers usually steal photos from other people. I search through Google images.