Jaishingdia

I doubt if I can say much that will help you. For us it took 18 months from application to visas applying through CHC London, but currently they are forecasting processing times of 3 1/2 to 4 years!!!
It also very much depends on where you are emigrating from!
Take a look at the CIC site to start with. www.cic.gc.ca/
It tells you all the different pathways for moving to Canada, and you can look at country-specific requirements and take an online assessment to see if you think you have enough points to apply as a skilled worker.

Some provinces may give you a faster way in through their Provincial Nominee Programmes if your profession is in particular demand.

In any case you need to have your credentials assessed and accepted by the Canadian Alliance of Physiotherapy regulators. www.alliancept.org/