Fonts don't get uploaded to the Creative Cloud, they get installed on your system. Do you have the Helvetica font that is missing from your documents? If so, you can do a quick google search to find a tutorial for installing it.
Adobe fonts is something different. It is a font service that allows you to instal fonts from Adobe for use in your Creative Cloud applications. You can browse for fonts, and activate them here https://fonts.adobe.com/fonts. Unfortunately the font you need is not offered from Adobe fonts.