I was driving my 94 ford Taurus when I stopped at a stop sign. Then when I tried to accelerate it wouldn't move At All! Any ideal what's wrong?

The weak link on any FWD car is the ATX--you likely lost your's (transmission oil pump failure?). Best to change fluid and filter every 30,000 miles.

Is it an hard fix

Unfortunately, yes, if I'm correct. As the owner of a 2000 Taurus, this is why I change the transmission fluid and filter every 30,000 miles and only use Amsoil or Mobil 1 synthetic ATF. You should have a local mechanic assess the situation for you.

If the ATF is brown or has a burnt smell to it, you can safely conclude the ATX is gone.