I got comp in class10 cbse so i again given improvement exam and again i got comp in that so now what should i do
See without passing your 10th its hard for you to get into any higher courses. Now I would recommend you to go for another time with a better preparation or you can opt for open schooling like NIOS etc. In open schooling the curriculums are relatively easier and you can easily coup the subject. As the open schooling is accepted all over India, so you will not find any issue with your higher education.
To know more about NIOS visit the link below:
https://school.careers360.com/articles/nios-admission
For 10th CBSE preparation tips visit the link below:
https://school.careers360.com/articles/cbse-class-10-preparation-tips
I hope this answer helps. All the very best for your future endeavors!