Computer Science

Hi Santosh, BCA is a 3-year degree and I doubt if it will be accepted. You have to first check with the universities, many will ask you to complete the first year of an MS degree in India itself. Overall academics must be very sound, more than 75% is recommended.

Please refer to the link provided below for a list of colleges which offer B.Tech in computer science in France. You can download the college brochure which contains all details regarding fee structure, of colleges which offer this course in France.
https://studyabroad.shiksha.com/france/be-btech-in-computer-science-engineering-colleges-ds

You need to appear for the entrance exams like GATE (Graduate Aptitude Test in Engineering) and according to your score, you'll get your colleges/university/Institute like http://entrance-exam.net/list-of-entrance-exams-in-mtech/

GIS and RS are definitely a very good pick after B.Sc. Computer science with a lot of advancement around climate research, disaster management and GIS holds a lot of potential in the future in India and abroad.

The eligibility criteria is: Pass in +2 with maths or computer Science/Business Maths/Statistics. Go through this link, and you get an opportunity to view eligibility criteria for several other streams that might be useful to you in future or your friends, relatives, and dear ones.
http://www.velsuniv.ac.in/course-eligibility.asp
The scope is excellent undoubtedly.
Wish you luck.

Screening is based on merit and you have taken two years extra plus your percentage is also not good, hence you might face some issue in the admission, for more details contact the college authorities:
https://www.shiksha.com/science/course/m-sc-in-computer-science-maharshi-dayanand-university-rohtak-270929

Evening or part time engineering courses are not valid any more as per the latest Supreme Court verdict, hence would recommend you to join a regular course for better career prospects.

MCA a better choice. Good luck.