Trying to find out how this font is licenced is painfully impossible on both the linked Microsoft website and the atrocious https://kermit-font.com/ homepage.
Regardless of the claimed merits of this font (I'm not dyslectic and this font just strains my eyes), I hold the opinion that any effort like this by a megacorp like Microsoft should be approached by them from a charitable angle. If this font isn't permissively licenced (I.e., Microsoft bought it and liberated it from creator Underware) and is just an Office exclusive, it is pointless, and possibly harmless (like that font which OpenDyslexic is based on).
I found the following at the end of https://microsoft.design/articles/introducing-kermit-a-typef...
"The basic styles of Kermit (Regular, Bold, Italic, and Bold Italic) are available today in Office, with the remaining 38 styles arriving in early May."
It's listed here: https://support.microsoft.com/en-us/office/cloud-fonts-in-of...
I didn't find an actual license. The typography faq presumably applies to the cloud fonts: https://learn.microsoft.com/en-us/typography/fonts/font-faq
+1 The first thing I did was search for the license. The license is what can make it or break it in this kind of project. The absence of clear and permissive licensing is a red flag for me.