After you enable Google Structured Data, you don't know how Google fetch your products and show to your audiences.
In this guide, I will how you how to test Google Structured Data by using Rich Result Test tool from Google.
Method #1: Structured Data Testing tool
Go to Structured Data Testing tool

Paste a product URL from your shop in the above input box and Run test.
After few minutes of analysis your product page, the result will be like this:

Preview results
Ok, if you want to preview results on Google Search engine, this is what you are looking for.

Method 2: Using Rich Results Test tool
Go to this Google tool.

Enter a Product URL and choose Googlebot desktop.
Then result likes this

Click Previews Results to Preview your product on Google

Result

FAQs:
Q: We got a warning message of review and aggregateRating.
A: It's because you don't install any Product Review app. You can install Product reviews by Shopify or Photo Reviews by AVADA (rich features).