Shopify Inventory Integration

Hello, I am working on a website and my client has advised they would like to integrate their current Shopify inventory as it comes with reports that she needs for her sales and use tax. I am sure this could be completed with a bit of coding but I have no idea as to where to even begin.

I have minimal knowledge of the Wix Velo language but would love any tips and insight to get the ball rolling on this as soon as possible.

Thank you in advance for your time and knowledge!