Rick Barry had the most games by a player younger than 24 with 40+ points, with 35 games.

Interpreted as:

most 40 or more point regular-season games before turning 24 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	Rick Barry R. Barry	35	1,600	44.0	45.7	10.3	4.1			16.3	33.4	48.9				13.0	14.6	89.1	57.4				1,541	362	142				124
2	Bob McAdoo B. McAdoo	32	1,415		44.2	16.2				17.4	28.9	60.3				9.4	11.4	82.5	65.2					519
3	Wilt Chamberlain W. Chamberlain	32	1,449	47.8	45.3	29.6	2.1			18.3	36.3	50.5				8.6	14.5	59.1	53.0				1,530	947	67				68
4	Michael Jordan M. Jordan	31	1,356	41.5	43.7	6.0	4.5	2.5	1.5	16.2	30.8	52.5	0.1	0.8	12.5	11.3	12.8	88.6	60.1	2.6	3.4	3.0	1,286	186	141	76	47	92	100
5	LeBron James L. James	27	1,203	44.3	44.6	8.0	7.1	2.2	0.7	15.5	27.9	55.7	3.0	6.6	45.3	10.5	13.2	79.8	66.2	1.7	6.3	3.6	1,195	216	191	59	18	96	65	+199
6	Luka Dončić L. Dončić	26	1,155	39.1	44.4	10.0	9.3	1.5	0.4	15.2	26.9	56.4	4.2	9.8	42.6	9.9	13.2	75.2	67.9	1.1	8.9	4.2	1,016	259	241	39	10	110	79	+212
7	Trae Young T. Young	26	1,148	38.2	44.2	4.3	9.4	0.9	0.2	13.8	24.9	55.6	5.4	11.2	48.6	11.0	12.4	89.1	72.7	0.7	3.7	5.2	994	112	244	24	5	134	45	+193
8	Tracy McGrady T. McGrady	22	977	41.6	44.4	8.3	4.7	1.7	1.0	15.9	29.5	53.8	3.0	6.1	48.9	9.7	12.6	76.6	63.3	2.3	6.0	2.9	915	182	104	38	22	64	47	+143
9	Kevin Durant K. Durant	21	903	42.9	43.0	9.5	3.0	1.4	1.2	14.5	24.4	59.6	3.0	6.0	49.6	11.0	12.2	89.5	72.2	1.5	8.0	3.2	901	199	64	30	25	67	50	+132
10	Shaquille O'Neal S. O'Neal	20	855	41.6	42.8	14.7	2.1	0.8	2.4	17.3	26.4	65.7	0.0	0.1	0.0	8.2	13.8	59.3	66.0	6.1	8.6	2.4	832	294	41	15	47	48	49
11	Anthony Edwards A. Edwards	19	845	38.0	44.5	5.8	4.2	1.6	0.8	14.8	27.1	54.7	6.1	12.7	48.1	8.8	10.6	83.1	70.1	1.1	4.7	3.5	723	111	79	31	16	67	34	+215
12	Kareem Abdul-Jabbar K. Abdul-Jabbar	19	842		44.3	15.7	3.7			17.3						9.7	13.5	71.9						299	70				57
13	Oscar Robertson O. Robertson	19	807		42.5	11.9	11.1			15.7						11.1	13.2	84.1						227	210				72
14	Walt Bellamy W. Bellamy	15	668		44.5	20.3				17.5						9.5	12.6	75.1						305					58
15	Nate Archibald N. Archibald	14	627		44.8	3.2				15.9	26.2	60.5				13.1	15.3	85.5	68.0					45
16	Anthony Davis A. Davis	13	572	40.2	44.0	14.4	3.2	1.7	2.0	16.1	25.9	62.0	1.0	2.1	48.1	10.8	12.4	87.6	70.1	3.5	10.8	2.0	523	187	42	22	26	26	32	+126
17	Gilbert Arenas G. Arenas	13	554	44.1	42.6	4.9	4.8	1.5	0.3	13.5	25.4	53.3	4.5	8.8	50.4	11.1	14.1	78.7	67.5	1.5	3.5	4.2	574	64	62	20	4	54	43	-20
18	Devin Booker D. Booker	12	561	39.4	46.8	6.1	6.3	1.2	0.6	15.8	27.7	57.2	3.8	8.5	45.1	11.3	12.4	90.6	70.6	1.1	5.0	4.5	473	73	76	14	7	54	38	+30
19	David Thompson D. Thompson	11	486	42.5	44.2	5.2	3.9		1.2	16.8	26.6	63.1				10.5	12.4	85.3	68.9	2.2	3.0		468	57	43		13		39
20	John Drew J. Drew	11	465	39.8	42.3	14.2	2.7			14.5	25.5	56.9				13.2	17.4	75.9	63.7				438	156	30				47
21	Jerry West J. West	11	502		45.6					15.6						14.4	17.1	84.0											20
22	Cam Thomas C. Thomas	9	390	37.6	43.3	3.4	3.4	0.7	0.3	15.0	26.1	57.4	5.2	10.2	51.1	8.1	9.0	90.1	72.1	0.6	2.9	3.6	339	31	31	6	3	32	25	-1
23	Jalen Green J. Green	9	371	37.8	41.2	4.4	3.3	0.9	0.3	13.6	22.2	61.0	5.2	9.7	54.0	8.9	10.2	87.0	77.1	0.8	3.7	2.6	340	40	30	8	3	23	14	+86
24	Jayson Tatum J. Tatum	9	413	37.5	45.9	7.4	4.3	1.0	0.8	15.4	25.4	60.7	5.9	9.9	59.6	9.1	10.0	91.1	76.9	0.9	6.6	1.8	337	67	39	9	7	16	21	+157
25	Ja Morant J. Morant	8	357	35.7	44.6	5.0	6.6	1.4	0.8	15.5	25.9	59.9	3.5	5.1	68.3	10.1	12.6	80.2	71.0	1.4	3.6	3.5	285	40	53	11	6	28	16	+90