Business Reviews module allows displaying Google and Yelp business reviews. To fetch reviews for your business you would need to add respective Google and Yelp API key. Here are some important points to note –
Your business reviews are fetched over these API keysGoogle allows only 5 reviews to fetch with Google API key.Similarly, Yelp allows fetching only 3 reviews.
Google and Yelp provide a limited number of reviews that are fixed. And this is dependent on which reviews Google and Yelp consider as the 「Most Relevant」 to your business.
Business Reviews module allows the option for auto-refreshing reviews. You can use this to fetch newly added reviews based on the time frame in which you receive reviews.