Music

Can you repost your question? What you are actually asking?

25000 INR is the fees for this course in Poddar International College, Jaipur.

Yes, there are many colleges in India that offer a Diploma in music. You can refer to the list of colleges here https://www.shiksha.com/arts-fine-visual-performing/music/colleges/diploma-courses-delhi-ncr?cr[]=10&rf=filters&uaf[]=location.

I believe there is some age limit for pursuing Bachelors, yet you can confirm from the institute where you wish to apply. You may be in luck and get admission.

Hi,
As you have a very good percentile in class 12th, you are eligible to take admission in this college. Yes, you can opt for music honors in this college, if you are interested in this course.

I advise you to start taking music classes from a well-known /reputed Music Professional. Enhance your singing skills, learn as much as you can. Try in competitions, leave your voice with videos online. Do your branding. Sing and practice a lot. Try and get your at least one video song made and spread it all over.

You can consider following colleges:
Rabindra Bharati University, B. T. Road, Kolkata
Rukminidevi College of Fine Arts, Chennai, Tamil Nadu
University of Delhi, Delhi
Shriram Bhartiya Kala Kendra, College of Music & Dance, New Delhi
Sangit Bhavan, Vishva-Bharati, P. O. Santiniketan, Gujarat
University of Madras, Chennai
Akhil Bhartiya Gandharv Mahavidyalay Mandal, Bhramanpuri, Miraj, Maharashtra
Faculty of Music and Fine Arts, Banaras Hindu University, Varanasi
Kala Academy's Goa College of Music, Panaji

Yes, there are a lot of courses provided for students interested in the music field after 10th. However, for undergraduate courses he needs to complete his 12th.