I'm not sure exactly how long it will take--approximately 40 minutes. is my guess--but you'll have to either rent a car, take a taxi or rideshare, or reserve a car service. There's probably a way to take a public bus, but you wouldn't be able to bring your luggage and it'd take something like forever.
I've assumed you mean the Orlando Amtrak station.
If you get a car service, you can usually get a grocery stop along with it, which we always do.
Enjoy the train ride!