This is a core block and thus available by default in Gutenberg WordPress editor. No download required.
WordPress File Block in Gutenberg allows you to add a downloadable link to your document/file on a page or post. You can display a download button as well with the downloadable link. You can upload a new file or select a file from the media library.
File Block Features
The file block toolbar has alignment options. And the sidebar settings panel contains link options and the option to hide the download button.
The file block displays the downloadable button and link on the frontend.
The file block added in Gutenberg editor.
File added in the file block.
The file block sidebar settings.