dual boot - No Windows 10 option in GRUB and Windows drive seems empty from Ubuntu

After installing Ubuntu in dual boot mode, I'm trying to switch back into Windows but when I boot up my computer and I'm in GRUB the only OS listed as an option to boot to is Ubuntu.

The SSD where Windows 10 was installed now seems to be completely empty when viewed in Ubuntu. I never formatted the drive so I have no idea why this is happening.