There is no specific way to score 98+ percentile. The only key is to find your weak areas and work on them. Yet I have compiled a list of tips that might help you in your journey of preparing for CAT.
Prior to preparing for the exam, give one or two mock tests to identify your weak and strong areas. This will help you focus more on the areas you are weak.
Don’t set unrealistic goals like 98 or 99. Set a goal that you are confident you can achieve else you will end up getting demotivated and disappointed.
Don’t join coaching classes or turn to CAT experts unless you find it almost impossible to understand the concepts on your own. This is because classes will consume a lot of time and you might not get time to practice the concepts you have learned.
Gather the best study material and self-study.
All these tips will not guarantee a 98+ CAT score but they will surely improve your score to a great extent.