Hello Leo Almeida,
Hope you are well. Are you meaning download the files where the shortcode is placed? For that, you can customize the link or can also use prebuilt link-templates, to customize link templates you can use template tags from here,
Template Tags
for the download URL, you can use
[download_url]
Usage:
<a href="[download_url]" class="btn btn-info">Download Now!</a>
Or you can also use [download_link]
And for backup safely your files, you can follow this doc,
Template Files
please check and let me know
Thank you and regards