Everyone hears about the flying aces or the tank aces, but I don't think I've ever read about the successes of proficient anti-aircraft crews.
I can imagine it being somewhat difficult to determine who shot down that one B-17 among the hundreds of AA guns firing up at a formation of thousands, but more modern conflicts rely less on massed AA fire and more on missiles or accurate self-propelled anti-aircraft guns.
Anti-aircraft tactics tended to focus on putting up a 'barrage' of multiple guns in the path of an aircraft, and in intense battles such as Malta, the Blitz and various naval actions kills would be credited to the anti-aircraft as a whole.
Tactical AA guns, such as those that travelled with armoured columns and convoys, were valuable not so much for destroying aircraft as for preventing the planes circling, searching and attacking without interference.
In modern times the AA missile changes things but the nature of a crew-served weapon that relies on electronics and some luck for success probably mitigates against celebrating 'aces'.