Storage is full, cannot delete out of the cloud

Hi @christi_6246, welcome to the community!
Could you let us know what version of Lightroom you’re using?
One way to batch delete photos is through Lightroom Web. Here’s how:

1. Select one photo by checking the box in the top-right corner of its thumbnail.
2. Then go to the last photo you want to delete, hold Shift, and click it. This will select all photos in between.
3. At the bottom, you’ll see a bar with a trash icon on the far right. Click that to delete the selected photos.

On the left panel, you’ll find a Deleted folder. Photos stay there for 30 days before being permanently removed. If you need to recover any, you can do it from there. Or, if you want to permanently delete them right away, select them all again and confirm deletion.
Thanks so much!
Alek