Yes, you have many number of chances to improve your marks by re attending the board exam if you are not satisfied with your present marks. Be well prepared this time as you know now how important this stage is, for your career.

Or you have another option with you as well. Continue your studies with any common degrees like BA, Bcom, BSc, etc and try to score good marks in these streams. If your aim is only to get an 9-5 job, this would be the best plan rather than taking re-exam.