Are VOR frequencies static? I am a brand new student pilot pursuing my private cert.  I don't need to know this for a while, but I'm trying to learn about VOR navigation to enjoy my sim flights more, in the meantime.

My question is this: is the VOR frequency for a given station static/permanent?  If you're looking at a chart from ten years ago (which, granted, I'm sure you're not supposed to be doing) and it shows a freq for a given station of 116.20, is that frequency likely to still be 116.20 for that station today?

That's a bit exaggerated of a timeline, but another way to ask this question is this: how often do VOR frequencies change?  How recent does a chart have to be, for you to rely on a frequency as printed on that chart?
Charts are updated regularly by the FAA and expired charts should not be considered legal for navigation. Your chart must be current as per the date range printed on the cover for it to be considered reliable. That being said in my experience the VOR frequencies remain constant although I'm sure you can find instances in which they have changed over the years I have yet to see it happen. 

FWIW the FAA is slowly shutting down the VOR system as GPS has become the prevalent navigation method.