A good score you can expect with the proper stratery of the study for any of the exam preparation. You can plan your study to follow some of the points given below:

Make your time schedule & devide your time subject wise & topic wise as it will help you to cover all the syllabus.

After completing particular chapter take revision again to make it well prepare.

Group study can be very helpful.

Make your own notes as per your convenience, It will help you at the time of the exam.

Please explain for which college you want to apply for BA programme. Each college has different criteria for the admission.