How do I add a product schema in shopify website?

Hi Friends,
The same way you do on any website really. Any decent theme you buy or have made for you should include it already though.

The Product schema objects are are probably the most important ones: https://schema.org/Product

you can use google structured data, facebook suuggested meta data, twitter meta data to implement product/article etc pages.

 use the JSON-LD for SEO app. ... Most themes will come pre-built with schema markup for products, breadcrumbs, and other types.

Copy and paste your Shopify product page URL into the Google Structured ... <div itemprop="offers" itemscope itemtype="http://schema.org/Offer">.