Yesterday, the Pwn20wnd team released the UNC0ver 5.0.0 download first, which theoretically supports iOS 11~iOS 13.5 jailbreaking for all iOS devices (except iOS 12.3-12.3.2, 12.4.2-12.4.5).
While applicable to a wide range of devices, including those that support the A12/A13 platform, UNC0VER is generally less stable than another set of tools checkra1n.
Shortly after the release of unc0ver 5.0.0, checkra1n 0.10.2 beta were released, finally adding support for iOS 13.5 jailbreak.
You can download it here:
https://checkra.in/releases/0.10.2-beta
However, checkra1n is still the highest supported iPhone X up to the A11 platform, and unlike unc0ver which can be jailbroken directly on the iPhone, checkra1n must be done with macOS or Linux.
Checkra1n is also easy to use, download macOS or Linux version, set your iOS device to DFU mode, connect your computer, open the desktop program and operate.