Damian Lillard, Kobe Bryant and Damon Stoudamire were tied for the most games with 50+ points and exactly 0 rebounds, with 1 game.

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most games with 50 points and 0 rebounds
Interpreted as:
most regular-season games by a player with 50 or more points and 0 rebounds
Damian LillardDamian Lillard151031.
Kobe BryantKobe Bryant161036.861.
Damon StoudamireDamon Stoudamire154043.
StatMuse has game-level data for rebounds going back to the 1982-83 season.