As I have discussed on a regular basis, obtaining Google Reviews for your business is an integral part of Google's search algorithm. In other words, the more reviews you have, the higher you will rank in Google. How many reviews do I need? More than your competition!
You have to spend a little effort to get these reviews. Ask your current clients / customers. Place a link to reviews on your web site, as well as your email signature on all outgoing emails.
WHERE to send your customers / clients. Often it is difficult for your customers / clients to find your ‘Google My Business’ listing so directing them is perfectly acceptable. You can include a link to your GMB page in the email signature footer, but a better place is on a simple business card that I can help you create.