Scam projects usually promise huge profits. That is the most common sign. For example a project with an initial bid price of $1 but they promote to you that they are an ambitious project that will hit $100. Next, you can do a little research on the website and the founder's profile. Usually they use website templates like other scam projects. Or using fake LinkedIn data. You can join some groups that discuss new projects. There's a lot of that on Telegram.
Yep. When you see a project is offering something too sweet to come true, we can suspect it as a scam project. Moreover if it is a new project that their tokens aren't listed in any exchanges. It will be more nonsense if they have no clear products and have no reputable projects as their partnerships. Also, it doesn't make sense at all to expect the price skyrocket from $1 to $100. This is simply a scam project, we are better to avoid joining the projects.
If we want to join a new project, we must ensure the capability and the track record of the teams. If we can't find clear information about the teams and they look unconvincingly, it is not a good sign to join the project. I myself will prefer to choose top projects if I experience the situation. Choose the top projects which have been trusted and proven for years.