Review your "Things you can create and do" panel in your Google Dashboard to see exactly what is being tracked and stored.

If you are looking at a 2 GB backup or archive of your digital history, it can contain approximately: ~600 to 1,000 high-resolution images. Documents: Tens of thousands of text files or PDFs.

Are you trying to an archive (like Google Takeout)? Are you trying to free up 2 GB of space on a device?