Get review ID or review object inside template file

Which template file?

Please explain a little more about what you are trying to do and where.

in any template file, for example in review.php. Can I somehow get review_id in templates ? I want get rating for review, and display only one star with that rating. I am able to query db, your custom table with ratings, I need only review_id

You can access the $review object directly in the review.php template. I asked which template because the review object is not available in all templates.

For example:

echo $review->ID;

echo $review->rating;

glsr_debug($review);