When you arrive in Canada, your health will be assessed when you speak to the border services officer. You must isolate for 14 days, even if you have no symptoms. This is mandatory for all travellers, and there are significant penalties for anyone who does not follow this order.
You must have a plan for how you will self-isolate for 14 days when you get to Canada and how you will obtain medical care if you become sick. While in self-isolation, you will be unable to leave where you are staying for any purpose. If you do not have a plan for self-isolation, including how you will buy groceries and access other essential services, please delay your travel until you have made one.