Kareem Abdul-Jabbar and Wilt Chamberlain were tied for the most games in the NBA Finals with 20+ points and a field-goal percentage of 70.0 or above, with 5 games.

most nba finals games with 20 points on on 70% shooting
Interpreted as:
most NBA finals games by a player with 20 or more points on on 70% or higher shooting
Abdul-JabbarChamberlainWorthyJohnsonGrantMcHaleDurantLeonardGasolParkerO'NealDrexlerDantleyCooperBirdCheeksGrossCowensRussellSandersRamseyAytonJamesButlerDavis5544332222222222222221111
NAMESERIESGPPTSFG%MPGPPGRPGAPGSPGBPGTPGFGMFGA3PM3PA3P%FTMFTAFT%MINREBASTSTLBLKTOVPF+/-
Kareem Abdul-JabbarKareem Abdul-JabbarNBA Finals514474.432.628.89.63.21.02.32.311.615.60.00.05.67.673.7163481649921
Wilt ChamberlainWilt ChamberlainNBA Finals513875.347.827.624.23.011.014.65.611.250.02391211515
James WorthyJames WorthyNBA Finals412080.344.030.04.82.50.80.51.512.315.30.00.05.58.068.817619103269
Magic JohnsonMagic JohnsonNBA Finals410575.042.326.39.09.02.00.52.89.012.00.50.5100.07.88.591.21693636821114
Horace GrantHorace GrantNBA Finals36678.439.322.08.02.01.70.72.39.712.30.00.02.73.088.91182465276
Kevin McHaleKevin McHaleNBA Finals37674.438.325.38.31.70.01.02.39.713.00.00.06.07.381.811525503712
Kevin DurantKevin DurantNBA Finals26570.639.232.57.56.00.51.03.512.017.03.55.563.65.05.0100.07815121276+42
Kawhi LeonardKawhi LeonardNBA Finals25173.936.625.57.02.01.51.52.08.511.53.05.060.05.56.584.67314433410+34
Pau GasolPau GasolNBA Finals24876.240.924.05.52.01.04.01.08.010.50.00.50.08.09.584.2821142826-11
Tony ParkerTony ParkerNBA Finals25071.437.225.04.03.00.00.03.010.014.01.02.050.04.06.561.574860064+1
Shaquille O'NealShaquille O'NealNBA Finals27078.446.035.015.51.50.01.04.014.518.50.00.06.011.552.2923130288-16
Clyde DrexlerClyde DrexlerNBA Finals25772.436.528.56.57.51.50.02.010.514.50.00.50.07.510.571.47313153046
Adrian DantleyAdrian DantleyNBA Finals25980.839.529.55.53.50.50.02.510.513.00.00.08.510.085.0791171056
Michael CooperMichael CooperNBA Finals24378.927.021.54.07.02.00.02.07.59.53.54.577.83.03.585.7548144042
Larry BirdLarry BirdNBA Finals26274.244.531.015.55.01.52.04.511.515.51.01.0100.07.08.582.48931103498
Maurice CheeksMaurice CheeksNBA Finals24378.338.521.52.58.54.00.03.09.011.50.00.03.55.563.6775178067
Bob GrossBob GrossNBA Finals24975.932.524.55.54.02.00.011.014.52.52.5100.065118408
Dave CowensDave CowensNBA Finals25273.332.026.09.01.50.00.511.015.04.05.080.064183019
Bill RussellBill RussellNBA Finals24680.048.023.024.07.510.012.53.07.540.09648157
Tom SandersTom SandersNBA Finals24270.837.521.07.50.58.512.04.05.080.0751519
Frank RamseyFrank RamseyNBA Finals24372.726.021.55.58.011.05.55.5100.052116
Deandre AytonDeandre AytonNBA Finals12280.038.722.019.00.01.00.00.08.010.00.00.06.06.0100.0391901003+13
LeBron JamesLeBron JamesNBA Finals14071.441.940.013.07.03.00.04.015.021.06.09.066.74.06.066.7421373041+7
Jimmy ButlerJimmy ButlerNBA Finals14070.044.940.011.013.02.02.05.014.020.00.00.012.014.085.74511132250+20
Anthony DavisAnthony DavisNBA Finals13275.039.632.014.01.01.00.03.015.020.01.01.0100.01.01.0100.0401411034+10
StatMuse has game-level data for field-goal percentage going back to the 1956 Finals.