Cops: We see Mr. White shoot (and probably kill) two cops that drive up in their squad car. Then we also see Mr. Pink shoot at three cops, and it appears like he hit two. So that's four that were hit, plus the one they torture and kill in the warehouse. (FIVE, with probably three or more killed)
Mr. Blonde is alleged by Mr. White to have shot several store employees and/or customers, at least four, maybe more. Mr. Orange, then shoots the lady who shot him while they carjacked her vehicle. (Five civilians shot, maybe more).
That's at least 10 shot (five cops, five civilians), with several dead. Am I missing anybody?
Additionally, all the robbers got shot, with three definitely killed (Mr. Blonde, Mr. Brown, Mr. Blue) and all the others except possibly Mr. Pink probably killed unless they were merely badly wounded.

Over a dozen cops and customers most definitely