The shortcode to be used in the template is
{rating_block}In the admin setting, you can choose a template for this block
Rating Block Template 1
Rating Block Template 2
Developer Note:
You can add more templates yourself. The location for adding the template is
catalog/view/theme/default/template/extension/module/oc2/order_review_rating_templates/
catalog/view/theme/default/template/extension/module/oc3/order_review_rating_templates/