I just purchased Creative Cloud / Photoshop, Photoshop did not complete loading. How do I get it?

Make sure your computer meets the minimum CPU & GPU requirements. Most Creative Cloud apps work on:

• Windows 10 versions 21H2, 21H1, 20H2, 2004, and 1909 (LTSB branches are not supported;)
• macOS 12 (Monterey), macOS 11 (Big Sur), macOS 10.16 or 10.15 (Catalina).

- https://helpx.adobe.com/creative-cloud/system-requirements.html
- https://helpx.adobe.com/photoshop/system-requirements.html
- https://helpx.adobe.com/photoshop/kb/photoshop-cc-gpu-card-faq.html

restart your computer and then follow the suggestion of @Peru Bob.

Install the CC app and download Photoshop from there:
https://helpx.adobe.com/download-install/kb/creative-cloud-desktop-app-download.html