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I installed a crucial MX500 SSD on my 17" iMac Core Duo computer. I created a bootable USB for macOS X Catalina. When I start up the computer holding down the option key, an image that says “Install macOS Catalina” appears and after clicking it, nothing happens. I waited all night and nothing. Please help. Thanks in advance.

The EMC 2104 is limited to Pre-Installed MacOS:X 10.4.4 (8G1165)Maximum MacOS:X 10.6.8* Go here and look up your machine and it will tell you the highest operating system your machine will take. https://everymac.com/ultimate-mac-lookup