Terms of Use and Terms and Conditions are interchangeably used on the Internet, although to a barrister, I’m sure that’s heresy of sorts.
That being said, most sites plant overarching ToU/T&C at the bottom, hence I always start there. But since it didn’t directly address your question, the only way to figure out if there is an obligation to display a EULA (or anything else) in a Microsoft “Store,” was to pretend as if I wanted to become one. Ergo - that led me to those Policies. Barring direct inquiry with someone beyond Level 1 anywhere in the MS Machine, this is about all that can be found.