Check for the ratings of the ICO on various websites like TrackICO or Icobench. Check for the team credentials. Read the whitepaper and see if they are really going t do something useful. Check out there social medias including discord and telegram to see if they are active and in contact with public or not.

Tip: Do not advice in any ICO in this bear market. You can get those tokens at half the ICO price when they hit the exchanges.