Re: "Upgraded for could+ storage 50GB but it’s still showing 5GB"
Try restarting your device, (deletes temporary files, re-establishes connections, often restores order if something is not working as expected. How to: Restart your iPhone - Apple Support
Re: Please resolve this ASAP.
We are all Apple users, like yourself in this community, we have no access to your accounts or details,
Generally allow 24 hours for changes to update, if a restart hasn't helped.
If needed:
You could contact iCloud Support:
(There is a "Get Support" link (online chat, phone, eMail etc) at the bottom of their webpage (link below):
iCloud - Official Apple Support