@Edgar Valdes Past papers are the way to go. If you have access to the exam test before the change, ie in 2020 or before, those questions could come up.
There are some questions online too, the ones I found didn't have correct answers, but actually going through the process like an open exam helped too.
Lastly I'd pay attention to all the help text in the roles, in the enable features and accounting preferences. Understanding what roles can publish dashboards, understanding the search permissions of publish, persist, perform, export lists. Understanding the priorities in price lists and its limits.
And exam strategy is important, pick 3 right is equivalent of picking 2 wrong in terms of elimination strategy. When you're stuck, just mark and skip, eventually a similar question might give you hints. NetSuite has a tendency of doing things in a simple way, any solution that feels too complicated or that it creates new records to reverse is probably not the right option. Also, at least in my experience, sometimes, a question's right answer lies in how the features have Capitalization In The Names Of The Feature.