Doesn't work that way. What are you trying to accomplish?
If you want the displays mirrored. You can use a VGA splitter from the laptop to duplicate the signal.
https://www.amazon.com/UGREEN-Splitter-Solution-Business-Applications/dp/B01F37AVWQ/
If you want to extend the desktop and your laptop does not have enough ports. You can use a USB to DVI graphics adapter. Which is really just a basic low end GPU.
https://www.amazon.com/Plugable-Graphics-Multiple-2048x1152-1920x1080/dp/B00A2E1MQA/
If your laptop also has an HDMI port. I'd use an HDMI to DVI cable for the second monitor.
https://www.amazon.com/AmazonBasics-Input-Output-Adapter-Cable/dp/B014I8UQJY/r