There are manual product review links that you can send customers for them to review a particular product, and the same goes for store reviews. These are best used on a one-off basis when you want to reach out to a customer (or you're already chatting with them) and they're interested in leaving a store review.
As a reminder: store reviews are a review of the overall shopping experience, they are not connected to a product, and they can be shown on-site using a review section or homepage carousel.
To put together your manual store review link, go to your Settings > Store information and under "Store health" you'll find your "Store key".
Copy the store key and add it to the url below by replacing "example-key" after the =
Now you're all set - paste that link into a browser (and share it with your customers) for them to leave you a store review :)