You can download files and folders to your computer from your Dropbox account. To do so:
Sign in to dropbox.com.
Click All files in the left sidebar.
Hover over the file or folder you’d like to download.
Click “…” (ellipsis).
Click Download.
Notes:
You can only download a folder if it’s less than 20 GB and has fewer than 10,000 total files.
Folders download as .zip files.
For more information about this please go to https://help.dropbox.com/installs-integrations/sync-uploads/download-entire-folders