Hi! I upgrate my storage, but nothing happens, can u help me guys?

Did you need more space in iCloud to sync data to? Or did you think that buying more iCloud Storage would somehow give you more space on your iPhone? Once purchased the memory on your iPhone is fixed and it cannot be made bigger. You can buy more storage in iCloud, but it cannot add space to your iPhone.

So what were hoping to accomplish by buying more storage?

This post by FoxFifth (found by searching Apple Support) might help:

If icloud is used to store my photos, why… - Apple Community