the 55-210mm lens is a 3.8x zoom, but that only measures the the difference between the widest setting (55mm), and the most telephoto (210mm) setting.
The zoom x is marketing hype.... with the 16-55mm, and the 55-210mm you have about 13.1x...
Look at it this way, if you were buying a car, instead of saying this car can travel between 16 mph and 210 mph, they said it could travel 13.1x speed.
See how the figure is precise, but isn't and is completely reliant on the lowest number, so the x number is almost completely useless.
The a6000 is a great camera, and that's a good kit, go out and enjoy, and don't worry about how many xes of zoom you have.