I'm encountering unclear-text-display-on-cube problem on Win10x64 machine, please see below post.
Thanks to your info, I got Helvetica font and used on Navigation Cube.
https://community.adobe.com/t5/indesign ... -p/6887530by Dov Isaacs | Adobe Employee
To directly respond to your question, there is no “free” version of Helvetica bundled with Windows and the version of Helvetica bundled with MacOS is a .dfont variant of TrueType Helvetica that may problematic for publishing use.
Otherwise, Helvetica is a trademarked, commercial font. It is not “free” and anyone offering you a “free” copy or version of Helvetica is doing so outside the law.
Adobe does not bundle any version of Helvetica with any applications. Nor is it available via TypeKit.
You can license Helvetica, Helvetica Neue, etc. from commercial font vendors including Adobe, Monotype, etc.
If your needs are not exact and you are on a strict budget, Arial may do. Arial is bundled with both Windows and MacOS.