can i get rank between 1 to 100 in jee mains without Classes?

Hii Sakshi!
Obviously yes! There's no limit to your capabilities, or your capabilities. You can definitely score a rank between 1 to 100 in Jee mains. But, for that you ought to know your syllabus perfectly and the preparation strategies should be good. You must be doing smartwork at this time to succeed in your exams. And remember don't be overconfident :) . Make a good strict timetable. Follow it strictly and concentrate fully on your studies. If you are not attending any classes, you can take guidance from your friends or YouTube tutorials. There are various ways to study without classes. You need to decide the way as per your comfort. Hope this helps.
Good luck!