Stephen Curry has the most games with 9+ three-pointers, with 38 games.

who has the most games with nine three pointers
Interpreted as:
Who has the most regular-season games with nine or more three pointers?
CurryHardenLillardThompsonSmithSimonsBryantHieldLaVineRobinsonRussellWalkerIrvingGordonScottOubreHardawayGrahamGeorgeMillerSprewellWalker38999544333333332222222
NAMEGP3PMMPGPPGRPGAPGSPGBPGTPGFGMFGAFG%3PA3P%FTMFTAFT%MINPTSREBASTSTLBLKTOVPF+/-
Stephen CurryStephen Curry3837935.444.35.15.91.40.33.514.524.858.516.460.85.25.792.61,3451,682194226531013284+540
James HardenJames Harden98439.450.97.38.71.31.25.115.730.751.117.653.210.211.688.5354458667812114628+119
Damian LillardDamian Lillard98638.750.34.47.31.80.32.215.327.455.915.461.910.110.992.934845340661632016+116
Klay ThompsonKlay Thompson99233.442.64.62.91.40.92.314.723.762.015.267.23.03.487.130138341261382118+161
JR SmithJR Smith54934.835.63.82.81.00.21.012.023.251.717.057.61.82.864.317417819145158+61
Anfernee SimonsAnfernee Simons43636.536.33.04.50.80.31.511.520.855.414.861.04.34.594.414614512183168+39
Kobe BryantKobe Bryant43941.049.05.32.82.30.32.316.530.055.015.861.96.38.078.1164196211191913+30
Buddy HieldBuddy Hield32937.238.05.33.30.70.32.713.322.359.715.064.41.72.083.311211416102184+54
Zach LaVineZach LaVine33238.146.76.03.70.70.34.716.326.362.015.768.13.33.3100.0114140181121149+32
Duncan RobinsonDuncan Robinson32837.830.02.31.30.30.31.010.014.369.813.768.30.70.7100.011490741137+44
D'Angelo RussellD'Angelo Russell32733.034.33.35.70.70.03.312.021.356.314.064.31.32.357.199103101720104-20
Kemba WalkerKemba Walker32834.540.32.05.70.70.02.012.721.758.514.763.65.76.389.51031216172064+86
Kyrie IrvingKyrie Irving32935.648.33.74.71.70.33.015.725.761.014.069.07.39.081.510714511145197+31
Ben GordonBen Gordon32738.038.73.76.01.70.03.312.720.362.310.387.14.35.381.31141161118501011-6
Dennis ScottDennis Scott32939.036.35.02.00.70.71.013.025.052.016.758.00.70.7100.01171091562235-11
Kelly Oubre Jr.Kelly Oubre Jr.21929.535.55.51.51.00.50.511.017.064.714.565.54.04.588.959711132116+56
Tim Hardaway Jr.Tim Hardaway Jr.21934.832.52.51.50.50.50.511.518.562.215.063.30.01.00.07065531113+19
Devonte' GrahamDevonte' Graham21936.131.05.55.51.00.03.510.020.548.816.059.41.51.5100.0726211112076+8
Paul GeorgePaul George21934.840.05.54.51.50.01.013.522.061.414.565.53.54.577.870801193026+36
Mike MillerMike Miller21839.939.03.06.50.50.53.513.521.064.314.562.13.04.075.080786131174+19
Latrell SprewellLatrell Sprewell21845.543.05.04.51.50.04.515.527.556.411.578.33.04.566.791861093095+13
Antoine WalkerAntoine Walker21845.539.06.58.03.01.03.513.526.550.913.566.73.05.060.0917813166278-1
Darius GarlandDarius Garland11040.051.02.06.02.00.02.016.031.051.615.066.79.013.069.24051262023+6
Tyrese MaxeyTyrese Maxey1939.844.08.04.01.00.02.015.020.075.012.075.05.06.083.34044841023+29
Robert CovingtonRobert Covington11145.643.08.02.02.03.02.015.024.062.518.061.12.02.0100.04643822325+30
StatMuse has game-level data for three-pointers going back to the 1979-80 season.