If ORCA runs ICO via public smart contract and shows that they gains $1.5million in 50 hours, you can believe it. If it is just the number shown on their website, you must not trust, it can be a fake number. Many ICO using fake collected number to cheat investors. Be careful!
the funds collected in ETH can be checked online, though ORCA also accept two other currencies but the tendencies can be seen through there. same goes with the smart contract. if you're interested in a project it is not that hard to check it on your own i'd say..