I downloaded the signature file next to the electrum download which I'm not sure about that if those are the right files in right order. I made a keypair but it mentions a private key?
The guide is pointing to your GPG/PGP private key, it's basically the "
secret" part of the keypair that you've created which consists of a private and public key.
It has no relation to Bitcoin's private key.
Since you now has a keypair, you can now proceed to import Electrum developers' public keys.
If the provided tutorials are overwhelming, try this simple one:
bitcoinelectrum.com/how-to-verify-your-electrum-download/