Hi Pratibha,
BA Telugu is a 3 year full time UG level language course. Minimum eligiblity for this course is 10+2 level. Many colleges Offer BA telugu course in various states of India, but mainly state of AP colleges and universities offer this course.
Fee structure for the course Ranges from *INR 1000 to 2 lakh*. It depends on the performance of student in merit list or in entrance exam.
Top colleges for this course are:-
1. AV college of Arts, science,  and commerce, Hyderabad
2. CMI Arts and science college, Warangal.
3.Osmania university, Hyderabad.
4. Government degree college for men, Srikakun.

All the best for your degree :)