Template Tag for post ID?

Hi

I use the hook element to insert a shortcode in posts. That shortcode (Site Reviews) needs the ID of the post, so the reviews to be associated with that particular post. I've read your documentation https://docs.generatepress.com/article/header-element-template-tags/#custom_field-name but, unfortunately, I have not find something for ID. I have tried {{ID}} but didn't work :(
Can be done something to have the ID of the current post?

Thank you!