I saw a project and on that project I did not see the team and DEV from the project. however they use Escrow with good positive trust, can it be a determinant that the project will not be scam?
Unfortunately, escrow will never give full security. It happened in past that Bitcointalk users with very large number of trust points disappear with the money. You can always divide the risk and ask for escrow half one user and the other part the second one, and even do it with three or four escrows.