B.A Eligibility

You must have scored a high percentage in class 12th board exam.

Minimum 50% required in class 12th. So, you are eligible for applying in BA Psychology.
All the best.

BA in Psychology is an undergraduate level Bachelor's Degree program. Students who have passed 12th standard (any stream) are eligible to pursue this course. In simple terms, Psychology is the science of behavior and mind. This domain has decent scope and potential in India and abroad.
Good luck.

Hello,
Yes, if you are interested in dance, you can apply for BA Hons. Dance.

Minimum 60% marks in aggregate in 10+2 with 60% marks in the subject of choice.
Selection would be on the basis of the aggregate of Best 4 Subjects, which includes a language and the subject of choice.

Eligibility Criteria for Admission : You must have passed 10+2 or its equivalent with special aptitude in drama.
https://www.shiksha.com/arts-fine-visual-performing/drama/course/b-a-hons-in-drama-rabindra-bharati-university-b-t-road-kolkata-269620

Yes, You're eligible.
B.A. Acting is an undergraduate Acting, Dance, and Drama program.
Average Course Fee: INR 5,000 to 8 Lacs and varies from College to college.
Course Level: Graduate
Duration of the Course: 3 years
Admission Process: Entrance exam and Merit Based.

Yes, you can apply in this course but might not be able to get admission in top colleges because the cut-off list goes high.

Getting admission in Delhi University depends upon the cutoff list. Wait for the list and you will come to know about the admission. However, there are many other private colleges that are providing professional courses after class 12th. You can check out them also.