Readers cannot leave a review of your book on Amazon until the book has officially released through that platform. Also, one of the eligibility requirements is that they have spent at least $50.00 in the calendar year from a credit or debit card on Amazon to be eligible to leave any product review.
For more information about Amazon's Eligibility Requirements to leave reviews, click here.
We understand how important reviews are, so in the meantime you can point readers to your BookBaby Bookshop listing. Your customers can leave a review there by scrolling down to the bottom of the page and clicking “Leave a Review”. Please note they will need to create an account to submit the review.