Upgrade my iCloud

There's:

Upgrade to iCloud+ - Apple Support

//support.apple.com/en-us/HT201318

This is an example. ~However you may choose differently

& that can provide different results based on your choices.

And if you have another aspect of why you'd believe iCloud

upgrade may be an answer to some Apple OS, spell it out.

Additional information as it relates ~ is located within linked support articles:

• Create an Apple ID
• Manage Apple ID preferences
• What is iCloud?
• What is iCloud+?
• Set up iCloud on your Mac
• Store files in iCloud Drive
• Share files with iCloud File Sharing
• Manage iCloud storage
• Use iCloud Photos

These are among others found within the macOS User Guide

Table of Contents version macOS User Guide - Apple Support

For additional reference these may be bookmarked:

iCloud User Guide [Table of Contents] - Apple Support

//support.apple.com/guide/icloud/toc

Please define 'upgrade my iCloud'.

It isn't clear what you're trying to do, which makes it hard to give specific advice.

In addition, it isn't clear what you've tried to do so far (to avoid us giving advice to things you've already tried), nor any indication what happens when you do try (which may give a clue as the the problem, and therefore solution).

> Ok how can I do it now

Do what?

You still haven't explained what it is you're trying to do.