Michael Jordan has the most career points per game by a shooting guard, with 31.5 per game.

Interpreted as:

highest career ppg with a minimum of 400 games played shooting guard

NAME	GP	PPG	MPG	RPG	APG	SPG	BPG	TPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	MIN	PTS	REB	AST	STL	BLK	TOV	PF	+/-
Michael Jordan	930	31.5	38.6	6.3	5.4	2.5	0.9	2.8	11.8	23.3	50.5	0.6	1.8	33.2	7.3	8.7	83.8	35,887	29,277	5,836	5,012	2,306	828	2,589	2,493	+1416
Allen Iverson	554	27.3	41.6	3.8	5.7	2.2	0.2	3.5	9.5	22.6	42.0	1.1	3.7	31.0	7.2	9.3	78.0	23,019	15,149	2,082	3,152	1,242	90	1,943	997	+1368
George Gervin	709	26.5	33.6	4.4	2.8	1.2	0.8	3.0	10.3	20.3	50.8	0.1	0.5	29.7	5.8	6.8	84.5	23,831	18,813	3,153	1,976	836	566	2,137	2,045
Kobe Bryant	1,280	25.4	36.5	5.3	4.8	1.5	0.5	3.0	8.8	19.6	45.1	1.3	4.0	33.4	6.4	7.6	83.7	46,774	32,482	6,800	6,122	1,882	627	3,881	3,238	+4724
Pete Maravich	463	25.1	37.0	4.1	5.1	1.2	0.3	3.1	9.8	21.9	44.6	0.2	0.3	66.7	5.6	6.8	81.9	17,120	11,621	1,891	2,347	366	82	282	1,315
Donovan Mitchell	468	24.8	34.2	4.3	4.6	1.4	0.3	2.8	8.8	19.6	45.0	3.0	8.1	36.6	4.2	5.0	84.3	16,011	11,619	2,002	2,176	645	156	1,298	1,160	+2068
Devin Booker	534	24.0	33.9	4.0	4.8	0.9	0.3	2.9	8.4	18.2	46.4	2.1	5.7	36.2	5.1	5.8	87.1	18,113	12,829	2,148	2,560	454	161	1,551	1,574	+535
Dwyane Wade	926	23.1	34.7	4.8	5.6	1.6	0.9	3.2	8.4	17.4	48.2	0.5	1.8	29.3	5.8	7.5	76.7	32,111	21,409	4,434	5,198	1,473	804	2,990	2,064	+2717
James Harden	913	22.7	34.4	5.3	6.7	1.4	0.6	3.4	6.7	15.2	44.2	2.5	6.9	36.5	6.7	7.8	86.0	31,408	20,711	4,840	6,136	1,318	504	3,068	2,236	+3480
David Thompson	509	22.1	32.0	3.8	3.2	0.9	0.8	2.6	8.3	16.4	50.4	0.1	0.3	27.7	5.5	7.1	77.8	16,305	11,264	1,921	1,631	459	407	1,129	1,287
Zach LaVine	503	22.0	33.7	4.2	4.0	0.9	0.3	2.6	7.8	16.8	46.7	2.5	6.4	38.4	3.9	4.7	83.3	16,957	11,088	2,136	2,009	459	161	1,324	1,097	-1184
Bradley Beal	748	21.9	34.6	4.1	4.3	1.1	0.4	2.5	8.0	17.3	46.3	2.2	5.8	37.5	3.7	4.5	82.2	25,858	16,355	3,068	3,237	824	311	1,839	1,669	+433
Tracy McGrady	618	21.5	34.4	5.8	4.9	1.3	0.8	2.3	7.8	18.0	43.7	1.3	3.9	34.3	4.5	6.0	74.9	21,253	13,294	3,561	3,017	787	487	1,429	1,084	+946
DeMar DeRozan	981	21.2	34.7	4.4	3.8	1.0	0.3	2.0	7.6	16.3	46.3	0.5	1.7	29.9	5.5	6.6	83.8	34,089	20,762	4,276	3,725	982	326	1,991	2,201	+316
Mitch Richmond	976	21.0	35.2	3.9	3.5	1.2	0.3	2.6	7.5	16.4	45.5	1.4	3.5	38.8	4.7	5.5	85.0	34,309	20,497	3,801	3,398	1,211	254	2,579	2,503	-406
World B. Free	750	20.4	31.0	2.8	3.9	1.0	0.2	2.5	7.4	16.4	45.4	0.4	1.1	34.3	5.3	7.1	75.2	23,257	15,337	2,085	2,919	779	185	1,523	1,943
Clyde Drexler	1,086	20.4	34.6	6.1	5.6	2.0	0.7	2.7	7.7	16.3	47.2	0.8	2.4	31.8	4.3	5.5	78.8	37,537	22,195	6,677	6,125	2,207	719	2,977	3,285	+434
Hal Greer	1,003	20.4	36.4	5.3	4.1				8.0	17.7	45.3				4.4	5.4	80.2	36,530	20,413	5,288	4,113				3,511
Latrell Sprewell	400	20.1	40.0	4.3	4.7	1.7	0.7	3.1	7.1	16.2	43.6	1.4	4.2	33.2	4.6	5.8	79.1	16,009	8,032	1,725	1,862	696	269	1,247	761	-395
Sam Jones	597	20.0	30.7	5.0	2.9				8.2	17.9	45.8				3.6	4.5	80.8	18,305	11,959	2,985	1,730				1,309
Dale Ellis	548	19.8	32.4	3.8	1.9	1.0	0.2	1.9	7.7	15.4	49.9	1.4	3.5	41.2	3.0	3.8	78.8	17,744	10,860	2,092	1,014	545	103	1,033	1,273	+408
Klay Thompson	793	19.6	32.6	3.5	2.3	0.9	0.5	1.7	7.3	16.1	45.3	3.1	7.6	41.3	1.8	2.1	85.8	25,842	15,531	2,795	1,843	676	413	1,336	1,624	+3914
CJ McCollum	731	19.5	32.1	3.6	3.8	0.9	0.4	1.8	7.4	16.4	45.4	2.5	6.2	39.9	2.1	2.6	80.6	23,432	14,231	2,655	2,778	658	302	1,320	1,533	+1185
Jeff Malone	905	19.0	32.8	2.6	2.4	0.6	0.1	1.7	7.8	16.2	48.4	0.1	0.4	26.8	3.3	3.7	87.1	29,660	17,231	2,364	2,154	577	100	1,538	1,695
Ray Allen	1,300	18.9	35.6	4.1	3.4	1.1	0.2	2.1	6.6	14.6	45.2	2.3	5.7	40.0	3.4	3.8	89.4	46,344	24,505	5,272	4,361	1,451	244	2,709	2,858	+3491