308 times according to this. (Including golf at places OTHER than his own clubs.) And all the vacation time when he didn't play golf that particular day. The pig has been on vacation more than any president in history.
"Trump has spent nearly 22 percent of his days in office at one of his golf properties for some portion of the day. There have been days where Trump has visited one of his golf clubs and not played golf. He made a 40-minute visit to his Trump National Golf Club in Sterling, Va., and he has made a three-day visit to Trump National Golf Club in Bedminster, N.J., to watch the 2017 US Women's Open, unfolding at that club. Trump spent a 17-day "working vacation" at Trump National Golf Club in Bedminster, N.J., in August, which meant all of those days count as days on his golf courses, even though he didn't necessarily play golf on all of those days."
https://thegolfnewsnet.com/golfnewsnetteam/2020/12/29/how-many-times-president-donald-trump-played-golf-in-office-103836/