1. Click settings
Log in to your Shopify admin, then find and click Settings at the bottom of the left menu bar.
2. Shipping and Delivery
Find the Shipping and Delivery option and select the profile for which you want to change the shipping rate.
3. Edit
Locate the shipping zone and select the country within that zone for which you need to adjust the shipping rate. Click Edit to make changes to the shipping rate.
If you want to add a shipping method to the target shipping zone, just click Add Rate.
4. Save
Find and click the Save button at the bottom of the page to save your shipping profile.