Making Bootable USB Drive for Catalina

I have a dumb issue at "Install macOS Catalina on Supported PCs":
On step 2.11 : I see an icon Catalina, when I put my mouse on it tells me that it's to create a bootable USB drive...
But I can't click on it, there is no way to pass this step.
Can you guys help me?

Author: jojow