libgd is not a Perl module - it's really nothing to do specifically with Perl at all. But it is a graphics library of long repute. The Perl module GD is essentially a Perl wrapper around libgd so without libgd it would be of no use.
Either you or the systems administrator of your Windows box will need to install libgd if you want to use GD. I can't really help you with that since I've spent the past 30 years avoiding MS Windows. The repo has some instructions here but I can't vouch for them because ... well, Windows.
Best of luck.