The phrase "review queue" refers to a list of items or tasks that need to be checked or assessed by someone. It's like having a lineup of things waiting for scrutiny or evaluation. Full definition
We will review the queue several times daily, so please don't resubmit if your comment doesn't appear immediately. (blog.logitech.com)
If a question is edited by the original poster when it is marked [on hold], it will automatically be placed in a review queue to be considered for reopening. (politics.stackexchange.com)
Apparently, this is the way SPAM is controlled, First time users go into a review queue. (nystateofpolitics.com)