Yarvi starts counting from the moment your store opened Yarvi for the first time. Nothing from before that shows up.
If the "Pixel installed" step is still open, the pixel hasn't reported a page view yet. It reports when a page is viewed in a browser, so open your storefront in a normal browser window and click through to a product. The step updates as soon as that event arrives.
Opening Yarvi in your Shopify admin again checks the pixel and adds it back if it is missing. You don't need to edit your theme.
If the pixel step is done but no AI agent has visited, that is normal in the first days. Agents find stores on their own schedule. Also check that your robots.txt or a bot protection app isn't blocking agent crawlers, because then agents can't read your product pages at all.
If something still looks wrong after a day, ask in Help in the Yarvi app and it goes to Ned.