As you probably know Google+ is being shutdown at the beginning of April:
There's still time to export your content before then
Shutting down Google+ for consumer (personal) accounts on April 2, 2019 - Google+ Help
January 30, 2019In December 2018, we announced our decision to shut down Google+ for consumers in April 2019 due to low usage and challenges involved in maintaining a successful product tha
support.google.com
Download your Google+ data - Google+ Help
You can export and download your Google+ data, including your Google+ circles, Communities, Streams, and +1’s. Important: Downloading your Google+ content may take time, so get started before
support.google.com