Hey Pratiksha,
BPT (Bachelor in Physiotherapy) is a 4-year undergraduate degree course in the health care industry.
If you want to take admission in this course, firstly you have to select a college which is offering Physiotherapy, see the requirements (eligibility required) needed to get admission in the college.
Then fill the application form for that college (fill forms for multiple colleges).
If you would be eligible according to the criteria of that college, then you would get admission in that college, you may have to give entrance exam for that college.
If you have given any state or national level exam like CET and AIMEE related to Physiotherapy then it would be even advantagenous for you.
It is so simple as it sounds!