Can I bring my product reviews over when I move to Shopify?

Yes, in most cases. Reviews live in a reviews app/plugin, not the platform itself, so the migration is app-to-app: export from your current reviews tool and import into a Shopify reviews app (Judge.me, Loox, Yotpo, Okendo all support imports). Match reviews to the right products by SKU/handle so nothing orphans.

Keep the review schema markup too, so the star ratings keep showing in Google results. That's part of preserving SEO during the move, not an afterthought.