Once you've installed the app, open any Google Sheet and launch Airboxr.

You can find it under Add-ons → Airboxr → Launch.

Click on IMPORT from the home screen.

Click on Add next to Shopify

Find Shopify from the list of sources and click on the Add button next to it.

Create a Shopify API key and password

This is a quick step, but needs to be done through your Shopify admin portal. Here is a video walkthrough of the steps.

https://www.youtube.com/watch?v=s1KfzqOMpos

Enter your Shopify store URL, API key, and password.

Enter the entire store URL (including myshopify.com), and the API key and password you created in the previous step.