In the past few months, users are continuously reporting on misleading reviews and rating on the play store. Google is taking steps to clean this mess. Google has deployed an anti-spam system to detect and remove fake reviews and rating from the store.
This spam detection system uses machine learning and Al to classify spam reviews from legitimate ones. Also, Google keeps an eye on those applications which generate spam. This system has already removed millions of fake reviews in the past few weeks and hope continue to do so.