Attach Text data to gameobjects by player

I am trying to figure out, something along these lines:

Player with OnMouseUp - triggers with a collider on say "Cube A" - a GUI Pop-up shows, with a description, and a text field to update the description with the players own notes, and then close again.

If the player hits Cube B: it will be deffinerent notes, etc.

Anyone have an idea on how to create it?

Ive done a Pop-up on mouseup script.

but creating a text field, to update the text area and saving it automatically so when they reopen the game its still there.. is confusing to me. thank you