I want transfer photos to iCloud

See -> Access and view iCloud Photos on your iPhone, iPad or iPod touch

Access and view iCloud Photos on your iPhone, iPad or iPod touch – Apple Support (UK)

Do more with your photos

1.          Transfer photos and videos from your iPhone, iPad or iPod touch.

2.          Download photos and videos from iCloud.

3.          Take and manage photos.

4.          Set up and use iCloud Photos.

5.          Reduce the size of your iCloud Photos.

6.          Get help with iCloud Photos.

7.          Check your iCloud storage.

See point 4.

4.          Set up and use iCloud Photos.