How to check my Shopify theme version
Checking out your current theme files can help you quickly determine which version of Shopify store you're using. Simply follow the steps below:
1. Head to your Shopify Admin page.
2. First, click on Sales Channels, and then Online Store.
3. Go to the Themes page, and by clicking on the three dots, open Edit Code.
4. Here, locate the Templates folder. In this folder, if all your files are .json, then it means your theme is Shopify 2.0 Online Store theme.