Graphics drivers are updated via operating system updates. Make sure that you have the latest macOS updates by choosing Software Update from the Apple menu or via Updates in the App Store.
Be aware that notebook drivers sometimes have a different name than similar desktop drivers. Some video adapter manufacturers have other software that requires updating in addition to the video driver. Read the update instructions carefully, and contact the video adapter manufacturer directly if you don't understand the instructions.
To learn how to manually update or reinstall your graphics driver for Windows 10, see Update drivers in Windows 10.