In DU, the cut off varies college to college and as per your above said percentage chances should be decent to get admission there. Also, there is no update regarding application forms but as per previous year information it should be released in the month of May-June so to check the complete application process and cut off you can go through the below links -

https://university.careers360.com/articles/du-application-form

https://university.careers360.com/articles/du-cutoff

And if you talk about the scope of B.Sc CS then after graduating in this program you will be having two options to choose either higher studies or job so if you opt for masters then MBA, M.Sc, B.Ed,MCA are the ideal courses for you or if you want to go for job then few fields where you can try are mentioned below -

• Programmer or Software Engineer
• Computer Scientist
• Computer Engineer, Hardware Designer, Logic Designer
• Systems Engineer, System integrator
• Systems Analyst
• System Administration
• Technical Support, Support Engineer etc.

Good Luck!!!!