Select Header/Values in Form

I would like the ability to select column names and enum values as selectable text, to copy into clipboard.

Unfortunately, I do not believe those features are available in AppSheet at the moment.

I suggest you create the master table for list of column names and use that tables to create dropdown.

Not sure if you understand, that would not allow me to select text with a mouse/touch and copy/paste into another field.

Ah, okey, i slightly misunderstood your query, sorry.
But why do you need to stick with copy and paste?