The quiz is added to your storefront via a Theme App Block using Shopify's Theme Editor:
After publishing your quiz, click "Add to theme" in the Quiz Builder header. This opens your Theme Editor directly.
In the Theme Editor, click "Add section" or "Add block" (depending on where you want the quiz).
Find PerfectMatch: AI Shopping Quiz in the apps section and click to add it.
Select which quiz to display from the block settings dropdown.
Position the block on your page using drag-and-drop.
Click Save in the Theme Editor.