I’ve used these and they come together with the HX711 and there’s an Arduino library to read it (or any HX711)
https://www.amazon.com/gp/product/B09VYSHW16
These were the ones I used here:
If you were going to have only a small number (less than 10) then a single controller with two GPIOs for each scale can keep track of all of them. If your controller has USB serial then you can send the results to a computer COM port. Maybe JSON or something so it’s easy to parse.
If you need 100 scales then you can have 10 controllers and 10 USB cables and a USB hub (or a few). I’m not sure how many COM ports a computer can have before something breaks.