How do u delete old apps from iCloud??

Apps are never stored in iCloud. You can delete apps from your phone. You can hide apps from your purchased list.

Delete apps on your iPhone, iPad, and iPod touch - Apple Support

Hide purchases from the App Store - Apple Support

Perhaps if you explain in more detail what you're trying to do, people can provide more guidance.

It means that you have downloaded/purchased the item before and can download it again without having to pay anything or authenticate the download.

If you decide to re-download the app, you will be getting the latest version.

You can hide those apps using the instructions I provided above.