I have Adobe Photoshop Elements 6 (and the key) on a DVD Rom that came with my Epson Perfection V700 Photo Scanner. I want to install it on my new MacBook Pro. I would need to download it somewhere as my MacBook doesn't have a disc drive.

Unfortunately, Photoshop Elements 6 will not run on modern Apple Silicon Macs because PSE 6 requires an Intel Processor and a macOS that permits 32 bit applications, neither of which your new MacBook Pro with an Apple Silicon processor provides.

The installer for PSE 6 is 32 bits as is the PSE 6 application.

https://support.apple.com/en-us/103076

You can upgrade to Photoshop Elements 2026 which should run fine on your new MacBook Pro.

https://www.adobe.com/products/photoshop-elements.html