Choose to run it live from the USB, or Install ChromeOS Flex to erase your hard drive and install it permanently.
However, there are legitimate and practical ways to get a bootable, installable 64-bit version of a Chrome-like or true Chrome OS system on non-Chrome hardware. chrome os iso file 64 bit download
It wasn't just a browser; it was a fully functional OS with Android app support and a Linux terminal. Choose to run it live from the USB,
Several projects provide pre-compiled Chromium OS ISO files for 64-bit systems. The most reliable are: chrome os iso file 64 bit download
The safest way to get the latest 64-bit version is to use Google's official installer, which creates a bootable USB for you.