ArcGIS Pro 2.9.12:
If I click a geoprocessing tool parameter and then hit F1, the generic ArcGIS Pro help is opened.

https://pro.arcgis.com/en/pro-app/latest/help/main/welcome-to-the-arcgis-pro-app-help.htm
I think it would be better if the help for that specific GP tool (Copy Features) were opened instead.
I'm aware I can hit the (?) question mark button to open the tool's help. But I think F1 should do the same thing if the tool is in focus when the F1 key is hit.
Open this: https://pro.arcgis.com/en/pro-app/latest/tool-reference/data-management/copy-features.htm