A couple of heuristics to spot scams easily:

The team page is completely absent or incredibly sparse
The advisors page has people who have publicly declared they are not part of the ICO
The terms or the token sale are unclear or overly favorable to founders and insiders (>30% in aggregate is suspicious)
The project is offering guaranteed daily returns
White paper is lifted from other sources
This won’t catch 100% of scams, but will allow you to easily evaluate a project and figure out if it’s a scam early.