Don't forget the relationship between droid and non-droid in the Star Wars universe is one of slavery.
Threepio and Artoo are well liked (on the whole) by their owner/masters but they are not considered much more than property.
Unless someone writes a droid Spartacus storyline into Episodes VII through to IX they (and the Clonetroopers) are slaves and would never be given medals (even by the so called good guys).