Michael Jordan has the most points in a Conference Finals game, with 54 points versus the Knicks on May 31, 1993.

Interpreted as:

most pts in a conference finals game, list age by a player

NAME	PTS	AGE	DATE	SEASON	SERIES	TM		OPP	MIN	REB	AST	STL	BLK	TOV	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	PF	+/-
Michael Jordan	54	30-103	5/31/1993	1992-93	Conference Finals	CHI	vs	NYK	39	6	2	2	1	2	18	30	60.0	6	9	66.7	12	14	85.7	5
Dirk Nowitzki	50	27-347	6/1/2006	2005-06	Conference Finals	DAL	vs	PHX	43	12	3	1	0	1	14	26	53.8	5	6	83.3	17	18	94.4	2	+22
LeBron James	49	24-141	5/20/2009	2008-09	Conference Finals	CLE	vs	ORL	41	6	8	2	3	2	20	30	66.7	3	6	50.0	6	10	60.0	1	+7
Trae Young	48	22-277	6/23/2021	2020-21	Conference Finals	ATL	@	MIL	41	7	11	1	0	6	17	34	50.0	4	13	30.8	10	12	83.3	3	+10
Dirk Nowitzki	48	32-332	5/17/2011	2010-11	Conference Finals	DAL	vs	OKC	41	6	4	0	4	2	12	15	80.0	0	0		24	24	100.0	3	+12
LeBron James	48	22-152	5/31/2007	2006-07	Conference Finals	CLE	@	DET	50	9	7	2	0	2	18	33	54.5	2	3	66.7	10	14	71.4	3	+2
Jimmy Butler	47	32-255	5/27/2022	2021-22	Conference Finals	MIA	@	BOS	46	9	8	4	1	1	16	29	55.2	4	8	50.0	11	11	100.0	1	+8
Michael Jordan	47	27-098	5/26/1990	1989-90	Conference Finals	CHI	vs	DET	43	10	4	1	0	4	17	32	53.1	2	2	100.0	11	13	84.6	3
LeBron James	46	33-146	5/25/2018	2017-18	Conference Finals	CLE	vs	BOS	46	11	9	3	1	3	17	33	51.5	5	7	71.4	7	11	63.6	2	+15
Allen Iverson	46	25-359	6/1/2001	2000-01	Conference Finals	PHI	@	MIL	44	2	3	1	1	6	14	33	42.4	5	9	55.6	13	15	86.7	1	-16
Michael Jordan	46	26-099	5/27/1989	1988-89	Conference Finals	CHI	vs	DET	45	7	5	5	0	2	16	26	61.5	0	3	0.0	14	15	93.3	2
James Harden	45	25-272	5/25/2015	2014-15	Conference Finals	HOU	vs	GSW	40	9	5	2	2	3	13	22	59.1	7	11	63.6	12	13	92.3	2	+21
LeBron James	45	27-160	6/7/2012	2011-12	Conference Finals	MIA	@	BOS	45	15	5	0	0	4	19	26	73.1	2	4	50.0	5	9	55.6	3	+22
Kobe Bryant	45	22-269	5/19/2001	2000-01	Conference Finals	LAL	@	SAS	47	10	3	1	1	4	19	35	54.3	1	2	50.0	6	8	75.0	4	+17
Michael Jordan	45	33-100	5/27/1996	1995-96	Conference Finals	CHI	@	ORL	44	3	5	1	1	4	16	23	69.6	3	4	75.0	10	14	71.4	5
LeBron James	44	33-142	5/21/2018	2017-18	Conference Finals	CLE	vs	BOS	42	5	3	2	0	7	17	28	60.7	1	4	25.0	9	13	69.2	3	+9
Rajon Rondo	44	26-098	5/30/2012	2011-12	Conference Finals	BOS	@	MIA	53	8	10	3	0	3	16	24	66.7	2	2	100.0	10	12	83.3	3	-4
LeBron James	44	24-147	5/26/2009	2008-09	Conference Finals	CLE	@	ORL	49	12	7	1	1	8	13	29	44.8	4	10	40.0	14	18	77.8	5	+6
Allen Iverson	44	25-361	6/3/2001	2000-01	Conference Finals	PHI	vs	MIL	44	6	7	2	0	2	17	33	51.5	4	6	66.7	6	7	85.7	4	+19
Charles Barkley	44	30-105	6/5/1993	1992-93	Conference Finals	PHX	vs	SEA	46	24	1	1	1	1	12	20	60.0	1	1	100.0	19	22	86.4	3
Rick Barry	44	32-038	5/5/1976	1975-76	Conference Finals	GSW	vs	PHX	46	6	4	1	0		17	31	54.8				10	12	83.3	3
Kareem Abdul-Jabbar	44	27-002	4/18/1974	1973-74	Conference Finals	MIL	@	CHI	48	21	3	1	3		20	29	69.0				4	4	100.0	3
Gail Goodrich	44	30-002	4/25/1973	1972-73	Conference Finals	LAL	vs	GSW	36	3	8				19	26	73.1				6	7	85.7	3
Hakeem Olajuwon	43	32-125	5/26/1995	1994-95	Conference Finals	HOU	vs	SAS	46	11	4	0	5	2	19	32	59.4	1	1	100.0	4	4	100.0	5
Charles Barkley	43	30-101	6/1/1993	1992-93	Conference Finals	PHX	vs	SEA	47	15	10	2	2	3	16	22	72.7	0	0		11	11	100.0	2