Hi gmatkhurana,
The SC section is the easiest verbal section to make improvements on. Once you understand how to think and approach this question type, there are only so many ways you can be tested. Here at GMAT Pill we developed the 10 core frameworks which detail the 10 ways to approach GMAT sentence corrections.
Here is a sample video detailing one of the core frameworks:
https://www.gmatpill.com/gmat-practice-t ... stion/2184The RC score could definitely use some improvement. To improve RC - you really need visual guidance. Don't read articles about how to improve reading. You improve by actually doing or watching someone else do.
That's why you might find these video walkthroughs helpful:
https://www.gmatpill.com/practicequestio ... tions.htmlFor CR, we recommend a visual framework approach to help you understand the complex short passages and how each item relates to each other.
Here is a video describing the visual framework approach:
https://www.gmatpill.com/criticalreasoni ... Estate.mp4Best of luck on your studies!