The front tire of my Huffy 3 speed rubs against the right fork as it spins
Hmmm. Thats a bad thing. You want to fix that.


Most likely the front axle isn't centered in the fork when tightened down.  I'm guessing you have axle nuts and not a quick connect skewer?  You want to loosen both nuts, hold the tire centered underneath the headset (where you can easily see that the gap between the tire and the front fork is the same on both sides.)  Then carefully tighten the two nuts holding the axle to the fork (I think you need a 15mm box / open wrench for this.)
Its possible the rim is out of true so when the axle / hub is mounted straight the rim is off to one side or the other.  Generally you see this when there are loose or broken spokes.  Tool to fix this is a simple spoke wrench and a whole lot of patience.  
It's possible you have loose or missing wheel bearings at the hub.  When you spin the wheel is everything buttery smooth? Is there any noticable slop between the axle shaft and the hub? If so, that will have to be fixed (need more tools here, including a very thin hub wrench, grease, cleaner, possibly new bearings, etc...)