Hi, Deeana,
You need to figure out the root cause of not getting a high grade in your PMP tests about the scope knowledge area.
Suppose you understand that you don't have enough knowledge about scope. It would be best if you reread the scope section of PMBOK 6ed, or you read the scope section of Rita's Mulcahy book or read another textbook that you are using for study. Apply some memorization techniques to memorize it.
On the other hand, if you have difficulty making the right choice about scope questions; however, the scope knowledge is very clear for you. You should follow Harry's recommendations above. Please make sure to read the question explanation carefully, even if you choose the right question. PM PrepCast exam simulator is a rich source for your studies, and it will help you master the correct way of thinking when answering a PMP question.
I hope that my comment helps you.
Regards,
Thiago