Hello

You can write Class 10th exams if you are homeschooling and don't have any previous certificates. The National Institute of Open Schooling (NIOS) is the best option for you for the same. The main requirement is that you need to be at least 14 years of age. You won't need to submit any previous year certificates. The only thing you would need is a Self-Declaration that you have studied enough to purse this secondary course.

To know more about NIOS: NIOS

Hope this answer helps! Thank You!!!