Short answer: The only rating feature built today is a 1-to-5 star rating you can leave on a creator - not a written per-title review. It unlocks once you have either purchased their work or spent about 15 minutes reading it, and it aggregates into that creator's average. There are no Veez rewards for rating, no reviewer score, no helpfulness votes, and no leaderboard.
How the creator rating works
Open a creator's profile page and pick a star rating from 1 to 5. The control unlocks once you have bought something from that creator or spent about 15 minutes reading their work, so ratings come from readers who have actually engaged with the catalog. One rating per reader per creator counts, and you can change yours later.
What is not built
There are no written reviews on titles, no V rewards for rating, no reviewer score or badge, no helpfulness votes, and no leaderboard. If any of those arrive, this article will say so.