Today we are introducing a new program, Web Vitals, an initiative by Google to provide unified guidance for quality signals that, we believe, are essential to delivering a great user experience on the web... Measuring the quality of user experience has many facets. While some aspects of user experience are site and context specific, there is a common set of signals — "Core Web Vitals" — that is critical to all web experiences. - Introducing Web Vitals @ Chromium Blog
Today, we’re building on this work and providing an early look at an upcoming Search ranking change that incorporates these page experience metrics. We will introduce a new signal that combines Core Web Vitals with our existing signals for page experience to provide a holistic picture of the quality of a user’s experience on a web page. - Google Webmaster Central Blog
How do I audit Core Web Vital performance for my store, and.. my competition?
Try out the new (free) Core Web Vitals Dashboard app for Shopify! Preview...
This app provides a built-in report into how real-world Google Chrome users experience your Shopify-powered storefront, as captured by the Chrome UX Report, and enables you to benchmark your site against a custom list of competitors with respect to each of the vital metrics. The user experience data is provided by Chrome UX Report and aggregated from anonymized Chrome users browsing the web.
Have feedback, suggestions, or bug reports?
The app is open-source and live on GitHub: https://github.com/igrigorik/shopify-core-web-vitals/ - tag me on GitHub, or here.
Yep, that's normal behavior for sites that may not have sufficient amount of traffic for Chrome UX Report API to assess performance in a privacy preserving way. As you store grows, you should see data come through on the dashboard, and in the meantime you can still use the report to get a feel for how competitor sites are performing.