Google+ is no longer available for consumer (personal) and brand accounts
From all of us on the Google+ team, thank you for making Google+ such a special place.
Other Google products (such as Gmail, Google Photos, Google Drive and YouTube) were not shut down as part of the consumer Google+ shutdown and you can continue using these products. The Google Account that you use to sign in to these services will remain. Please note that photos and videos already backed up in Google Photos will not be deleted. Learn more
If you’re not sure whether your organisation uses G Suite, you can check here. G Suite customers may see some changes to Google+ features related to the consumer Google+ shutdown. You can find more details here or you can talk to your G Suite administrator to learn more.