I experienced the same thing on a 2k monitor with NVIDIA RTX 2070. Pass the nomodeset boot option to install Clear Linux OS. While in the text-GUI, remember to scroll up and down to see all the selections (add user, set local time, and important add nomodeset to kernel command line > extra arguments in advanced options).
There is no live mode in this situation. However, installing to an external drive does not affect your box.
For folks using NVIDIA graphics, I recommend installing Clear Linux OS using a recent ISO no less than 36740. The 36750 is the most recent on August 7, 2022 and works too.