Let's break your request down into points that are easy to address:
* Quick Export and Export As are not available to actions or scripting. Export Save for Web (Legacy) and Save As are available for actions and scripting.
* Where would the PNG file be saved?
* An example of scripting the opening a directory can be found in the following script:
https://github.com/MarshySwamp/Backup-Photoshop-Settings/blob/main/Open%20Photoshop%20Presets%20%26%...
* Keyboard shortcuts to apply to an installed script can be found under Edit > Keyboard Shortcuts