Verifying .sig for bitcoin.com wallet

[excalibur0922]

Hi guys

Given the .zip and .zip.sig files for the bitcoin.com wallet.
What is the EASIEST way to verify the download as legit.
This seems like a very important thing that is not explained anywhere on this site.
I am actually pretty annoyed at how difficult this is.
I have 7zip for doing checksums and that is super easy when you can look up the raw .txt file on github... but these .sig files... god!

Thank you for any help. I feel this will be a valuable life skill to know.