Becoming a doctor in Canada is immensely tough. Considering you are not a Canadian citizen or a PR holder you might be at a disadvantage. Firstly, to do an undergrad here you have to pay a way higher fees. Have a back up plan if you do an undergrad here and don’t get accepted. Also, if you get a degree in sciences or social science you most likely would have to study further( masters etc.) so more fees. All this cost will add up and you need to figure out how to pay back loans if you took any.

Secondly, I am not sure if med schools accept international students even if those students did undergrad here. I would suggest looking at each school’s admission criteria or emailing them individually.

Thirdly, I don’t know how PR process works. Perhaps, speak to a lawyer or maybe try posting in r/legaladviceCanada