Try the Fan Only switch setting at the thermostat.

If your thermostat has a Gas/Electric setting, check what it's at:

GAS setting: furnace controls blower. ELE setting: thermostat controls blower

^^ Both good advice^^. Look inside blower electrical box to see if high voltage (120 or 240) is present. If high voltage is present,test relay. If high voltage and relay both check out ok, us jumper from box or an extension cord to hardwire motor to see if it runs.

Thanks guys.  Turns out the board/relay was bad.  Waiting for it to come in the mail.  I hardwired the 240v fan and it runs.

Also, upon opening the chamber where the evaporator coil and fan are, it seems there is black mold on the floor and walls.  I sprayed everything except the fan with Protech Evaporator Coil Cleaner(self rinsing), but I don't believe it kills mold as I don't see it stated anywhere on the bottle.  How can I go about killing all the mold easily?  Should I stay away from fan when spraying stuff?  I was thinking of spraying(soaking) everything with hydrogen peroxide, except the fan and capacitor.  Thanks.

Bleach. but you may have to pull the fan assembly to do it properly and safely. And withiout finding the source of the mold, if it is in fact mold, you’re waising your time. It could be all over your A coil and in your ductwork.

I notice that in the original post that you said that you had 56 volts at the thermostat. That doesn't sound right - I would check how the system is wired. It might be related to why the "board" failed.