1. Go into your Shopify account and click Settings in the bottom left of your screen.

2. Click Shipping & Delivery

3. Click Manage.

4. Enter a Zone name and select Canada then click Done.

5. You will now need to add a rate. Click Add Rate.

6. Select the second option Use carrier or app to calculate rates > Select Worldwide >

You will see your new shipping rates added to the shipping page. 

 Read more: Setting up shipping zones