From Google Profile “Google Profile is simply how you represent yourself on Google products — it lets you tell others a bit more about who you are and what you’re all about. You control what goes into your Google Profile, sharing as much (or as little) as you’d like.“
From Google Operating System “Profiles are public and contain basic information about yourself: a nickname (the real name is displayed only to your contacts), your occupation, your location, a list of links, a photo and a short description. They are embedded as iframes in pages that showcase user-generated content (personalized maps, shared bookmarks).“
Even anyone can see your Google profiles and sometimes your profile can be visible on Google Search engines and it depends on to you.