Delhi University (DU)

You should join a course which can provide you some good skills which can be helpful to get a good job.

With this percentage, it is quite tough to say as many more things matter for admission. It includes your caste, category, the college in which you want to take admission, and the course you want to study.

Yes, you can.
You can prepare for UPSC after classes in college.
Also, you can join coaching for it.

Hansraj College, Ramjas, Kirorimal, Miranda House, Hindu College are best colleges in North campus in which you can get admission. Other good colleges have a high cut-off.
In south campus, Venkateshwara and JMC are the good colleges.

Hii Aditya,
Hope you are doing well. Look, the date of examinations will be out soon, that will be updated on the wdbsite itself. Stay Updated. As per my knowledge, the selections are done on the basis of marks secured in your high school examinations. The cut off will be out in no time. All the best.