Rick Barry had the most games by a player younger than 23 with 50+ points, with 7 games.

Interpreted as:

most 50 or more point regular-season games before turning 23 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	7	366	45.4	52.3	10.6	4.4			18.7	37.6	49.8				14.9	16.4	90.4	58.4				318	74	31				22
2	Devin Booker D. Booker	3	179	41.0	59.7	7.3	4.7	1.7	0.7	19.7	34.3	57.3	4.0	9.3	42.9	16.3	17.7	92.5	70.9	1.7	5.7	5.3	123	22	14	5	2	16	11	-11
3	LeBron James L. James	3	159	44.5	53.0	7.3	6.7	2.0	0.0	18.7	33.3	56.0	5.0	9.7	51.7	10.7	12.0	88.9	68.6	0.7	6.7	3.3	134	22	20	6	0	10	9	+9
4	Kyrie Irving K. Irving	2	112	42.6	56.0	3.5	5.0	3.0	0.0	18.5	34.0	54.4	9.0	13.0	69.2	10.0	10.0	100.0	72.9	1.5	2.0	2.5	85	7	10	6	0	5	3	+18
5	Victor Wembanyama V. Wembanyama	1	50	32.5	50.0	6.0	2.0	1.0	3.0	18.0	29.0	62.1	8.0	16.0	50.0	6.0	9.0	66.7	75.8	1.0	5.0	1.0	32	6	2	1	3	1	3	+13
6	Paolo Banchero P. Banchero	1	50	39.6	50.0	13.0	9.0	1.0	2.0	16.0	26.0	61.5	3.0	9.0	33.3	15.0	22.0	68.2	70.1	4.0	9.0	4.0	40	13	9	1	2	4	4	+3
7	Anthony Edwards A. Edwards	1	51	37.6	51.0	6.0	7.0	0.0	0.0	17.0	29.0	58.6	6.0	13.0	46.2	11.0	11.0	100.0	75.4	1.0	5.0	2.0	38	6	7	0	0	2	0	+6
8	Darius Garland D. Garland	1	51	40.0	51.0	2.0	6.0	2.0	0.0	16.0	31.0	51.6	10.0	15.0	66.7	9.0	13.0	69.2	69.4	1.0	1.0	2.0	40	2	6	2	0	2	3	+6
9	Saddiq Bey S. Bey	1	51	38.7	51.0	9.0	4.0	3.0	0.0	17.0	27.0	63.0	10.0	14.0	71.4	7.0	10.0	70.0	81.2	0.0	9.0	1.0	39	9	4	3	0	1	1	+11
10	Ja Morant J. Morant	1	52	34.3	52.0	7.0	2.0	0.0	0.0	22.0	30.0	73.3	4.0	4.0	100.0	4.0	7.0	57.1	78.6	1.0	6.0	4.0	34	7	2	0	0	4	1	+23
11	Luka Dončić L. Dončić	1	51	39.8	51.0	9.0	6.0	1.0	1.0	17.0	26.0	65.4	7.0	14.0	50.0	10.0	14.0	71.4	79.3	0.0	9.0	7.0	40	9	6	1	1	7	4	+9
12	Kevin Porter Jr. K. Porter Jr.	1	50	41.1	50.0	5.0	11.0	0.0	1.0	16.0	26.0	61.5	9.0	15.0	60.0	9.0	11.0	81.8	81.1	0.0	5.0	5.0	41	5	11	0	1	5	5	+19
13	Trae Young T. Young	1	50	39.5	50.0	2.0	8.0	2.0	1.0	12.0	25.0	48.0	8.0	15.0	53.3	18.0	19.0	94.7	74.9	0.0	2.0	7.0	40	2	8	2	1	7	4	+10
14	Karl-Anthony Towns K. Towns	1	56	41.4	56.0	15.0	4.0	0.0	1.0	19.0	32.0	59.4	6.0	8.0	75.0	12.0	15.0	80.0	72.5	4.0	11.0	2.0	41	15	4	0	1	2	4	+7
15	Anthony Davis A. Davis	1	59	43.4	59.0	20.0	4.0	0.0	1.0	24.0	34.0	70.6	2.0	2.0	100.0	9.0	10.0	90.0	76.8	6.0	14.0	2.0	43	20	4	0	1	2	1	+17
16	Terrence Ross T. Ross	1	51	43.9	51.0	9.0	1.0	1.0	0.0	16.0	29.0	55.2	10.0	17.0	58.8	9.0	10.0	90.0	76.3	3.0	6.0	3.0	44	9	1	1	0	3	4	-4
17	Brandon Jennings B. Jennings	1	55	40.7	55.0	5.0	5.0	0.0	0.0	21.0	34.0	61.8	7.0	8.0	87.5	6.0	8.0	75.0	73.3	1.0	4.0	4.0	41	5	5	0	0	4	1	+11
18	Amar'e Stoudemire A. Stoudemire	1	50	41.0	50.0	11.0	3.0	1.0	1.0	20.0	27.0	74.1	0.0	1.0	0.0	10.0	17.0	58.8	72.5	5.0	6.0	1.0	41	11	3	1	1	1	3	+25
19	Tracy McGrady T. McGrady	1	50	42.0	50.0	10.0	3.0	2.0	0.0	18.0	29.0	62.1	4.0	7.0	57.1	10.0	15.0	66.7	70.2	0.0	10.0	3.0	42	10	3	2	0	3	1	+7
20	Kobe Bryant K. Bryant	1	51	51.0	51.0	7.0	8.0	2.0	1.0	18.0	35.0	51.4	2.0	7.0	28.6	13.0	13.0	100.0	62.6	3.0	4.0	8.0	51	7	8	2	1	8	4	-2
21	Allen Iverson A. Iverson	1	50	46.0	50.0	5.0	6.0	2.0	0.0	17.0	32.0	53.1	5.0	9.0	55.6	11.0	18.0	61.1	62.6	2.0	3.0	9.0	46	5	6	2	0	9	5	-4
22	Jamal Mashburn J. Mashburn	1	50	43.0	50.0	10.0	2.0	0.0	0.0	19.0	31.0	61.3	3.0	3.0	100.0	9.0	13.0	69.2	68.1	5.0	5.0	8.0	43	10	2	0	0	8	4
23	Shaquille O'Neal S. O'Neal	1	53	36.0	53.0	18.0	4.0	2.0	2.0	22.0	31.0	71.0	0.0	0.0		9.0	13.0	69.2	72.2	7.0	11.0	3.0	36	18	4	2	2	3	3
24	Bob McAdoo B. McAdoo	1	52	48.0	52.0	22.0	2.0		7.0	20.0	28.0	71.4				12.0	14.0	85.7	76.1				48	22	2		7		4
25	Phil Chenier P. Chenier	1	53	42.0	53.0	1.0	4.0			22.0	31.0	71.0				9.0	11.0	81.8	73.9				42	1	4				0