Is there any posible way to filter who are going to make an ICO to be able to know if there are scam or not? And is there any bodies of law that would be able to punish them once they turn into scam. And what punishment should be given upon committing such the crime?
At the moment, ICO is not regulated by the legislation, but there are countries where the first steps have already been made for this. The point is to prevent companies from going to ICO if they don't have a sufficient budget and development plan. For the selection of projects, you should analyze the idea, the roadmap, evaluate the realism of plans, study the portfolio of the development team. But even this will not give guarantees that the project will reach the exchange.