Some are legit,some are scam.Its really hard to find a legit ICO's because scams are everywhere first thing you should do is you should review overall and make sure the ICO is Legit check their whitepaper and roadmap its important to determine the legit one for us not to lose money and effort
There are too many ICO's that can be considered legit and good, but there are also many that claims they are good and legit but in the later part you will just discover it turned out to be a scam. So my advise is that you do your research before you enter into any ICO's that you want to go in.