For iPhone X users who seem to be experiencing touch issues, you might be able to get your phone repaired for free. There seems to be a failed component in the display module that makes parts of the display not respond. Apple or an authorized dealer will replace the module for free. Now, if there are other issues (like a cracked screen) that’s preventing them from repairing the module, you will be charged for these repairs. Now, if you already paid for a display module replacement, you might be able to get a refund for this.
Source: Apple