I expect 130 in jee mains this year .if for instance I m unable to get a good score in jee next time . What should be my options for CS ?

Dear Anand

Anand your expectations doesn't work in the real time world because whatever or in whichever attempt you get the higher score in both the chances i.e in the month of January and in April you have to work accordingly because based upon that only you can be able to check the list of government / private institutions for your respective CSE department . So it won't be worth to expect your score instead of it go with your preparation & work hard to score more in the JEE mains entrance exam.

All the best