Michael Jordan had the most games by a player 30 or older with 38+ points, with 56 games.

Interpreted as:

most 38+ point regular-season games after turning 30 years old by a player

	NAME	GP	PTS	MPG	PPG	RPG	APG	SPG	BPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TPG	MIN	REB	AST	STL	BLK	TOV	PF	+/-
1	Michael Jordan M. Jordan	56	2,410	40.8	43.0	6.1	3.8	2.3	0.5	16.1	28.7	56.0	1.2	2.9	42.3	9.7	11.3	85.3	63.9	1.6	4.5	2.2	2,284	343	212	130	29	122	133	+270
2	Stephen Curry S. Curry	54	2,367	36.0	43.8	5.5	5.5	1.1	0.3	14.3	25.2	56.9	8.4	15.6	53.4	6.8	7.3	93.9	77.2	0.6	4.9	3.4	1,943	297	299	58	17	182	104	+497
3	Kobe Bryant K. Bryant	47	1,951	41.2	41.5	5.8	4.4	1.6	0.4	14.6	28.0	51.9	2.6	6.0	42.7	9.9	11.5	85.4	62.7	1.1	4.7	3.5	1,938	271	208	73	20	165	114	+164
4	Damian Lillard D. Lillard	44	1,889	38.2	42.9	4.7	7.2	1.1	0.3	12.9	23.2	55.7	6.3	13.2	47.8	10.8	11.5	93.7	75.9	0.5	4.2	3.1	1,680	208	315	47	13	137	77	+214
5	LeBron James L. James	44	1,840	38.5	41.8	9.0	7.1	1.3	0.9	15.4	25.6	60.0	4.6	8.8	52.2	6.5	8.4	77.6	71.4	1.1	7.9	3.8	1,695	398	313	59	38	165	75	+273
6	Alex English A. English	42	1,739	41.3	41.4	5.9	4.8	1.0	0.5	17.0	28.0	60.7	0.0	0.1	25.0	7.4	8.4	88.3	65.3	2.5	3.4	3.2	1,736	249	201	44	22	134	140
7	James Harden J. Harden	39	1,704	38.8	43.7	7.3	8.9	1.7	0.8	13.0	26.1	50.0	5.8	13.3	43.5	11.9	13.5	88.2	68.3	1.2	6.1	4.4	1,511	283	347	65	33	172	117	+451
8	Larry Bird L. Bird	36	1,517	43.3	42.1	10.4	7.2	2.0	0.8	16.6	27.9	59.3	1.6	3.7	42.1	7.5	8.0	93.4	67.0	1.6	8.8	3.0	1,557	375	260	72	28	107	85
9	Kevin Durant K. Durant	35	1,475	39.3	42.1	7.5	5.8	0.9	1.1	15.2	26.0	58.4	3.6	7.4	49.2	8.1	8.9	91.3	70.4	0.5	7.0	4.1	1,377	264	204	33	40	142	83	+131
10	Allen Iverson A. Iverson	35	1,454	45.2	41.5	4.1	7.9	1.7	0.1	14.4	27.8	52.0	1.5	3.9	38.7	11.2	13.1	85.4	62.0	0.7	3.4	3.6	1,583	143	276	59	5	125	58	+154
11	Dominique Wilkins D. Wilkins	35	1,437	40.7	41.1	8.4	2.9	1.1	0.4	14.6	26.3	55.7	2.0	4.1	48.6	9.8	11.4	85.8	65.6	3.7	4.7	2.7	1,425	293	100	40	14	96	70
12	Rick Barry R. Barry	33	1,400	41.8	42.4	6.1	6.4	2.7	0.5	17.6	32.8	53.7				7.3	7.8	93.8	58.6			3.9	1,378	202	210	90	18	27	88
13	Hakeem Olajuwon H. Olajuwon	32	1,327	42.6	41.5	11.8	3.8	1.8	3.1	16.0	27.1	58.9	0.1	0.3	20.0	9.5	11.6	81.9	64.4	2.7	9.1	3.2	1,364	377	121	57	99	101	105	+43
14	Jerry West J. West	31	1,264		40.8					14.9	26.3	56.8				11.0	13.1	83.5	63.6										75
15	George Gervin G. Gervin	27	1,120	39.4	41.5	5.1	3.2	1.2	1.1	15.9	26.9	59.0	0.1	0.3	44.4	9.6	11.1	86.3	65.2			3.3	1,065	139	87	33	29	88	83
16	Elgin Baylor E. Baylor	24	988		41.2					15.8						9.5	11.5	82.9
17	DeMar DeRozan D. DeRozan	22	911	40.2	41.4	5.5	5.2	1.2	0.3	14.7	24.9	59.1	1.1	2.7	40.0	10.9	12.1	89.5	68.4	0.8	4.8	2.1	884	122	115	27	6	46	58	+127
18	Karl Malone K. Malone	22	920	41.3	41.8	10.8	4.2	1.5	1.3	15.0	24.2	62.0	0.0	0.1	50.0	11.8	14.5	81.2	68.4	2.7	8.1	3.3	908	238	93	34	28	73	78	+132
19	Kareem Abdul-Jabbar K. Abdul-Jabbar	19	764	41.3	40.2	11.8	4.1			15.8	25.7	61.7	0.0	0.0		8.5	10.9	77.9	65.9				785	225	77				63
20	Wilt Chamberlain W. Chamberlain	19	901		47.4	26.7				20.0	27.0	74.1				7.4	16.3	45.5	69.4					508					34
21	Kyrie Irving K. Irving	18	750	39.7	41.7	5.4	5.1	1.4	0.7	14.7	25.7	57.2	5.2	10.5	49.2	7.1	7.7	92.0	71.6	0.8	4.6	2.6	714	97	92	26	13	47	48	+102
22	Bernard King B. King	18	786	41.2	43.7	6.8	4.6	1.5	0.3	16.9	30.1	56.1	0.2	0.7	25.0	9.7	11.8	82.2	61.8	2.3	4.4	3.9	741	122	82	27	6	71	50
23	Dirk Nowitzki D. Nowitzki	17	692	40.4	40.7	9.9	2.4	0.7	0.9	14.1	24.9	56.4	1.8	3.6	50.0	10.8	11.4	94.3	67.9	1.8	8.1	2.1	687	168	40	12	16	36	39	+155
24	Russell Westbrook R. Westbrook	15	618	39.4	41.2	10.2	7.1	1.3	0.5	16.1	29.3	54.8	3.1	6.9	44.7	6.0	8.1	73.8	62.6	1.9	8.3	5.3	591	153	107	20	7	79	55	-2
25	Adrian Dantley A. Dantley	13	532	40.3	40.9	5.0	4.1	0.9	0.0	15.6	23.5	66.3	0.0	0.2	0.0	9.7	11.6	83.4	71.4	2.0	3.0	3.0	524	65	53	12	0	39	40