My problem is that when I look at the photograph at the camera, it will look perfect, but when I look at the computer after I remove the SD card, it is all blurred and needs to be retaken. This is very inefficient and time consuming. Is there a software I can use (preferably for free) where I can connect my camera and laptop by USB so the shots appear in the laptop in real time?
Camera: Sony, ILCE-6000, a6000
Computer OS: Windows 10
It seems to me you have an X-Y problem here. The actual issue you're trying to solve is "how can I tell if my product photography is sharp", but you've jumped straight to the solution of "view it on a laptop".
It seems to me the best solution here is "get better at telling on your camera if the photo is sharp enough or not". How sharp it needs to be is obviously a matter of your use case, but for web use you should pretty much be able to tell from the full image on the camera's LCD whether it's sharp or not. If you're going to be blowing things up for print, ever digital camera I've used in the past 10+ years has the ability to zoom in to 100% on the reviewed image which again should be enough.
What you are asking about is called tethering or tethered shooting. It's a fairly common use case in studio environments, like what you are doing with product photography.
Tethertools is a good starting resource to find out what tools, accessories, and software might be compatible with a particular camera; in your case, the Sony a6000 can be tethered, but tethered live view is not possible. That means that you can use a computer to capture an image, and possibly even control some exposure settings from the computer, but you will not be able to see the image on the computer while composing, before taking the shot. You will only be able to see images captured by the camera on the computer.
As far as tethering software is concerned, the following explicitly state that the Sony a6000 is supported (again, without live view capability):
