Hi there, aimy28.
We understand that your iPhone X is unresponsive and stuck on the Apple logo screen with a progress bar.
For this, you'll need to place the phone into recovery mode and then restore it with a Mac or PC. The steps to do so can be found here.
When you do this, try to select the option to "Update" first. This will update the software without erasing any saved data. If you're unable to update, you'll need to chose "Restore". This will download new software, but will also remove all saved data from the iPhone.
Do you recall if you had a recent backup in iTunes/Finder or iCloud? Here's how to check for saved backups.
If you're unable to update or restore, or if the phone is still stuck on the same screen after the restore, please contact support: Get Support
Have a great rest of your night.