The Federal Reserve began taking high-denomination currency out of circulation and destroying large bills received by banks in 1969. As of January 14, 2020, only 336 $10,000 bills were known to exist, along with 342 remaining $5,000 bills and 165,372 remaining $1,000 bills.12 Due to their rarity, collectors pay considerably more than the face value of the bills to acquire them, and some are in museums in other parts of the world.
From Wikipedia:
The Federal Reserve began taking high-denomination currency out of circulation and destroying large bills received by banks in 1969. As of January 14, 2020, only 336 $10,000 bills were known to exist, along with 342 remaining $5,000 bills and 165,372 remaining $1,000 bills.12 Due to their rarity, collectors pay considerably more than the face value of the bills to acquire them, and some are in museums in other parts of the world.
https://en.wikipedia.org/wiki/Large_denominations_of_United_States_currency