Hi bilalnabi24
Giving a practice test helps you to prepare well for the real GMAT exam.Scoring high on mock test doesn't mean you will score high in your GMAT and same applies for the lower scores.Take your practice tests just to improve on your concepts, calculations, speed and focus. To score well on GMAT, practice as many tests as possible.Now, understand that more than giving a practice test, it is critical how much time you spend on analyzing your performance in the same. Typically, if you spend 2 hours in taking a mock test, spend 4-5 hours in analyzing it. Go over each and every question and find out a better, smarter and a faster way to solve each question.
Take a note of all the points and make sure you apply them in the next test. The key is to keep improving every day. Lastly, join an online study group. I suggest this because the biggest challenge in GMAT preparation is to be able to stay motivated and committed throughout the duration of your preparation. Let me know if you would have any further questions.
www.manyagroup.com