: I'm assuming you mean the Sky family of fonts, which might refer to a customized or derivative font family based on Helvetica Neue.

: Helvetica Neue is a popular sans-serif font designed by Linotype in 1983. The W23 version refers to a specific weight and style within the Helvetica Neue family.

: Unfortunately, I couldn't find any reliable sources offering Helvetica Neue W23 for free, specifically for Sky Family. The original Helvetica Neue font is a commercial font, and its use requires a license.