Hi @syasyashamsuri,
Welcome to the forum!
The certificate failure (while odd) is a bit of a red-herring here.
The Anaconda Prompt will install these packages as Windows builds, however Windows builds are not available for many of the bioinformatics tools that QIIME 2 relies on.
This means you need to use a different kind of terminal on Windows. Here is a great forum post that describes the exact issue you are running into, as well as what your options are for Windows terminals.
Hope this helps!
Cheers