if I have more than one ipad, does each have 5 gb of icloud storage?

Sorry, no. The 5GB free storage is linked to your Apple ID and is shared by all devices using that Apple ID.

janmcbaker wrote:

I got a new ipad. Data got transferred to the new one. If I delete data from the old ipad, does that also delete data from the new one?

Not if you use the instructions in the following: What to do before you sell, give away, or trade in your iPhone, iPad, or iPod touch - Apple Support

However, if you don't use those instructions and you manually delete items from the old iPad (e.g., manually delete photos in the Photos app) then it would also delete them from the new one if they are synced via iCloud.

Sure.