I looked for reviews REST API and I found this link:
http://www.ipragmatech.com/products/reviews-rest-api-magento/
I tried to add review via it using :
POST http://domain.com/index.php/rest/V1/review/post?productId=46&nickname=myName&title=Test&detail=Msg&ratingValue=3
and got the response [true,"You submitted your review for moderation."]
But when I try to retrieve the reviews Using:
GET http://domain.com/rest/V1/review/reviews/46
I got response [{"avg_rating_percent":"0","count":0,"reviews":[]}]
Best Answer
You have to approve the review in order to view it.
Goto Marketing > Reviews > Change your Review Status > Save Review.