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 - Currents 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 Currents data - Currents Help
You can export and download your Currents data, including your Currents circles, Communities, Streams, and Likes. To learn more about what you can download, read Export your data from Google Currents.
support.google.com