The same considerations as for links apply to citations . If agreements are made with nearby businesses, in the neighborhood, with local portals, it is good to be there. What do you think about including the Google map within a local business website? Which pages do you suggest placing it on? It's part of the usability of the site itself, it helps people who want to get to the store understand where you are.
It must be inserted in the Location Page, which is a Landing cameroon number data page with all the information about the point of sale and you can insert it in the way you like best. To insert it, the simplest way is to go to maps.google, search for your business, click on the “Share” link and then “Embed a map” and you get the iframe. However, pay attention to the GDPR legislation because it puts a lot of cookies in there! If the intention of the question was: “is it useful for SEO purposes?”, the answer is “almost nothing”.
Google has other data it uses to understand the strength of a listing. But use it because it's good for usability . What role do you think reviews have for local businesses that don't have to do with tourism or restaurants? I am thinking for example of business consultants, translators, language schools, hairdressers, and so on. They are always reviews from people who have used the service and expressed an opinion.