You didn't mention which version of Word you are using, but in recent versions:

alt+s (to open the references ribbon)

h to "show notes'

this moves from the main part of the document to the endnote / footnote section at the nearest note, or if in the endnote or footnote section, it moves back to the main part of the document.  If you have both endnotes and footnotes it will ask which to go to.

There is a longer section on this and other referencing features in Word in the upcoming Microsoft Word with NVDA which will be available from NV Access shortly.

Regards

Quentin