Google+ availability for work or school accounts
Google+ is available to G Suite users whose domains are on the new G Suite infrastructure. You can use your G Suite account with Google+ only if your domain administrator has enabled the service for your domain. Note that it is up to your domain administrator to determine which products will be made available for your entire domain.
It’s important to note that your administrator has access to any data you store in this account, including your email. Please read the G Suite Important Privacy Notice for more information.