Can responding to reviews help increase search results?

Responding to reviews has a massive impact on the discovery of your business listing in search results. Responding to all reviews is important because it shows engagement from the business owner and that all customers are important. 

Reviews help increase user engagement on the listing, and user engagement is a ranking factor, i.e., the more time users spend reading your reviews and clicking on features within your listing, the higher the chances that the algorithm will present your listing to a new user.