Tell me about bpt phy0tharapy course. admission start or when and fees amount

Bachelor of Physiotherapy is a 4 year under graduation course with 6 months of compulsory clinical internship. This program deals with physical therapy, physical movement that helps to prevent diseases and disabilities. The basic eligibility criteria is that the candidate must have passed 10+2 or equivalent with Physics, chemistry and biology as core subjects. Many institutes in India offer admission on the basis of score obtained in the qualifying examination. In that case, the one with higher marks in the qualifying examination, has the more chances of getting admitted. Some institutes conduct their own entrance test for admission. Physiotherapy is opted by many students nowadays. On completion of this course, graduates can find jobs in Government as well as private hospitals, clinics, health institutions, sports team, rehabilitation centers, educational institutes and many more. As a fresher, the salary can be around 1.5 to 1.8 lpa. Also it varies depending on the job title and company. As you gain experience in the field, you can open up your own clinic.
BJ Medical College, Ahmedabad, as you have tagged in the question doesn't offer this course. Admission usually starts in the months of  May- June. Now due to this pandemic, everything has been changed. All the exams have been postponed, so are the admissions. You need to look for particular college and then check out their admission process. Fees depend on the institute if its private of government or autonomous. For government colleges the fees can be quite low while for autonomous institutes it can be in lakhs. http://medicine.careers360.com/colleges/list-of-physiotherapy-colleges-in-india