Nawadays, the ICOs market was affected by scams, which generates distrust in them. Taking into account these events, Will are there some entities or platform that guarantees that an ICO is reliable to invest?
There are many ICO rating sites that conducts a study about ICOs so you can make use of this sites to take a look as to what ICOs are hot nowadays and what is not. However, you should not entirely depend on them because some of them are just paid to promote the ICO so you may end up losing your capital especially if it is just a scam and the team would be gone after collecting some money.
The best way still is conducting your own research and then determine the pros and cons of investing in that ICO. You can check the ideas of people here in the forum but you should filter it too because there are others who would just comment about it because it is part of their bounty.