I no nothing about keeping gold fish but I have a empty 10 gallon tank laying around and wondering if there are any goldfish that will live in
It's best not to buy fish that you don't have a good tank for.
Read up on cycling before buying any fish or they'll just end up dying and/or suffering painful ammonia burns.
Most fancy goldfish will need at least a 30 gallon, common goldfish need much larger tanks. Most pet stores will lie and tell you that's not the case, but they're just trying to get you to buy something.