Jailbreaking an iPhone X can be done by following these steps:

1. Check to make sure your iPhone is compatible with the jailbreak method you want to use.
2. Understand the risks of jailbreaking.
3. Back up your iPhone.
4. Go to https://checkra.in/releases/0.11.0-beta in a web browser.
5. Scroll down and click Download for MacOS.
6. Open the Installation file.
7. Connect your iPhone to your computer.
8. Open Checkra1n.
9. Put your iPhone into DFU mode.
10. Click Start.

Please note that jailbreaking your iPhone can void its warranty and may cause security issues. It is also important to back up your device before jailbreaking it. I hope this helps!