why is my icloud storage details unavailable

What do you mean specifically by it's unavailable? If on an iOS device, have you tried going to Settings > Apple ID (top) > iCloud > and you should see a color bar for your iCloud storage.

What details do you want to see?

need help my iPhone 6 icloud storage have a problem too ses

icloud storage details are currently unavailable. its mean I cant use icloud storage?