There isn’t any way to add custom fields directly to the dashboard using ACF. There might be an indirect way to do this, but that would depend on what it is you want to add and what you want to accomplish. Do you want to add fields and values that the user can edit? What would these fields control/change? Or do you just want to display the field values from somewhere else?
Welcome to the Advanced Custom Fields community forum.
Browse through ideas, snippets of code, questions and answers between fellow ACF users