What you do to get a title, perhaps (4)
I believe the answer is:
deed
This clue might be a double definition.
'what you do to get a' is the first definition.
The definition suggests a singular noun which matches the answer.
'title perhaps' is the second definition.
The definition and answer can be both related to communication as well as being singular nouns.
Maybe they are linked in a way I don't understand?
Can you help me to learn more?
(Other definitions for deed that I've seen before include "Act - exploit - legal document" , "What's done" , "Something done" , "Intentional action" , "Heroic exploit" .)