icloud photos
My phone keeps saying that I have photos waiting to be uploaded. I have enough storage and I have been waiting for 2 days.
iPhone XS Max
A couple steps you might wanna try.
Make sure your software on your device is up-to-date.
Perform a soft reset on your device.
If you know which photos they are, you can go to iCloud.com straight from your device. Login. And upload them to your iCloud from your device
Your photos and videos are stored in iCloud exactly as you took them. All of your images are held in their original formats at full resolution — HEIF, JPEG, RAW, PNG, GIF, TIFF, HEVC, and MP4 — as well as special formats you capture with your iPhone, like slo-mo, time-lapse, 4K videos, and Live Photos.
If you're on a device with iOS 11 or later or macOS High Sierra or later, the photos and videos you take are in HEIF and HEVC format. These formats use less storage, with the same quality.