How long does it take from the moment that someone selects the book for review till its done?

The review process starts with five days to read and review the book. The author may or may not use the entire five-day period.

After the author submits their review on our website, there is a three-day waiting period to allow Amazon to post the review publicly. Amazon has total control over this, and we've seen delays up to 10 days before the review is live.

Once the three-day period is over, the author can confirm the review.

If the review can not be confirmed, it can be submitted to the support team for research. This confirmation verification process can take up to seven days in total. 

The total time a review submission can take is 4-15 days.