I'm not sure what you're asking. If you're asking how to become a registered pharmacist in Pakistan, then this is the wrong forum.
If you're asking how to become a registered pharmacist in Canada, this is the wrong section of the forum. You want to post in Foreign Workers.
If you're wanting to immigrate based on your skills, you need to post in Federal Skilled Workers. (Although you need at least 1 year of work first and I don't believe pharmacist was on the NOC list of needed workers.)
If you're wanting to visit Canada to sit for a pharmacy exam, then this is the right section.
Please let us know what you are actually seeking.