You can go to "Field Management" in the admin tab, look for your field and then check the "Used by" section.
This will give you a (non-exportable, sorry) view of everywhere that field is used, including lists, campaigns, forms etc.
According to Sanford's feedback, it is not recommended to mass update forms.
It is recommended to use (a couple) "global" forms, where you control which fields to hide or display depending on context. You need development for that approach though...
The "used by" section will probably be your best option to at least have a comprehensive reliable list of everything that needs changing.