Hi carlamarisa,
Thanks for the new screenshot, as that really helps.
That 1% symbol is advising that iCloud Photos is in the process of uploading your photos to iCloud, and has only gotten to 1%.
What you need to do to help with that process, is to plug into power and leave connected to Wi-Fi for awhile. It may take a longer time, if you have a lot of photos. Overnight works, as you can not overcharge your iPhone.
When iCloud Photos is finished with uploading your photos, check the available storage on your iPhone again at Settings > General > iPhone Storage.
Once iCloud has your full resolution photos, the smaller version of the photos should help free up space on your iPhone itself.
More info can be found here: Set up and use iCloud Photos - Apple Support
Let us know if you still need help with your iPhone storage after iCloud Photos finishes.
Take care!