Hello, iv recently got lightroom classic and its saying that i have not used any of my available cloud storage yet i am always backing up everything when i finish using the app.
Can anyone explain how to use the available storage or what i'm doing wrong.
You can ignore that warning. The creative cloud storage can be used by syncing images from Lightroom Classic to the cloud. You can sync individual images (drag them into all synced photographs) or sync entire collections. They will then show up on Lightroom CC on iOS and Android devices, on the web at lightroom.adobe.com, and in Lightroom CC (the cloud based Lightroom) on desktop computers. If you never need to do anything like that, just ignore the message.
You're not doing anything wrong. It's apparently just a friendly reminder that you have this cloud space but you are not using it. Backing up the catalog is a local action, by the way. It does not use cloud space either.