How to sign files with a Code Signing certificate?

Question

Electronic digital signature

Bought a code signing certificate. A download link has been sent to your email.
Downloaded, but it seems that the certificate is not at all the one that is needed (only one CER file).
I don't understand how to sign files. As far as we know, there should also be a private key, but it is not.
I don't understand what kind of certificate this is.
Global sign service.

Answer 1

The information may no longer be very relevant, but we will write. Probably 3 years ago, GlobalSign had a practice of receiving a certificate request through a browser, usually IE, after issuing a certificate, you need to import the public key into IE and then export everything along with the private key generated when requesting a certificate. Now this practice is with the Sectigo OV Code Signing certificate, GlobalSign now uses a system with exporting a certificate to a token.