Icloud

because you have a problem - however to get help with any problem you have to provide details and context - this article will assist you in learning how to writ a question which is possible to answer - Writing an effective Apple Support Communities question

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Are you signed into Settings/Your Name/iCloud and have you turned Photos syncing on? In the Photos app, do you see any indication the photos are uploading?

Try Settings/Your Name/iCloud and slide off syncing. Wait a few minutes and then slide syncing on.

See this article About storage on your device and in iCloud - Apple Support