TLS for windows app pfx needed

I need a pfx certificate for my windows app that is running on the cloudflare service. using a cloud server.

how do I obtain it?

how do I obtain and Origin certificate from cloudflare? where on the panel would I find the setting to request this service?

I’m pretty sure you mean a pfx certificate to deploy/distribute WIndows 10 apps (/metro apps). You can only obtain one via distributing via the Windows store: https://developer.microsoft.com/en-us/store