Hello :-},
Welcome to Microsoft Community.
I understand that this is a computer that you only got two days ago, so if the device is eligible for exchange, I think the most important thing you should do at this point is to negotiate with the seller about whether you can exchange it, because this device is indeed having problems with your use.
If the seller refuses to replace the device, please go to the device Manager and verify that the touch screen of the device is disabled by following the instructions linked below:
Enable and disable your touchscreen in Windows - Microsoft Support
If it appears normally in the list, disable it and then try it again.
If the preceding operations do not work or you do not see the device name, visit the website of the manufacturer of the computer, download the touch screen driver that matches the device model, and install it again. After completing this operation, the touch screen function should return to normal.
However, if you still have no luck, you may need to send the device to the after-sales service for repair.
Best regards,
Mitchell - | Microsoft community support expert from MSFT