It is also advisable to place the main keyword in the title of the company profile. Also, take advantage of the description to tell in a natural way the activity of your business.
Avoid spamming and place the keywords in a measured and semantically matching way. Do not over-optimize because Google is not stupid. If it discovers that you want to cheat, it will penalize you.
Another advantage of optimizing Google My Business is that customers will be able to review your business. There is no better advertising than a satisfied customer. So, after you close a sale, invite your customers to leave a review. Remember that reviews will be visible in local search results.