I understand that many of us do not suggest investing in ICO but I have to say not every ICO scam, invest in IEO no matter the exchange is, it is better than investing in ICO.
However, these steps help to judge the project.
1. The team behind the project, it is extremely important to see who guides the project, experiments, are they able to implement the road map.
2. The idea of the project, what the project solve, is the project can change something or introduce something new.
3. What has been done and are there any steps the team is taking to prove credibility.
4. Is the project is ICO or IEO, IEO will be better.
5. How many exchanges the project listing.
6. The type of the exchanges(however this is not issues as some project cannot go with top exchanges, top exchanges required a lot money).
7- check (twitter, facebook, telegram, website metrics).
8- It will be good if the project has ann on bitcointalk forum.
9- Pay attention to what the team promised, it should not be far from reality or promises to enrich or quick profit (such as 200% profit).
10- Look for old project in the market at least 3 month old.
I know for sure that now it is very difficult to choose a successful project. Of course, you need to choose according to your criteria, but even this will not guarantee that the project will be successful. Now there are a lot of scammers and cheating by project admins. All this is alarming and striking a lot of mistrust. The main thing is to realize that there are always risks, even if the project looks promising.