It's minigolf! You walk through an 18-hole course, take your shots along the way, and view a scorecard at the end. The physics are tight, and the base gameplay is implemented in a way that's great for modern VR setups; controls (while imperfect, I don't like how the smooth movement stops you when you hit a wall) are even mapped to a single controller so you can hold it with both hands like you would a golf club when you take your swing.
It bears mentioning that while the courses are fun to go through once, it's also an inherently repeatable activity. Videogame minigolf's like a good rhythm game, in that even if you've experienced a stage before it's still worthwhile to try for a new score or use as something to occupy your hands during conversation with friends. Me, my partner (@Phenokage), and a mutual friend (@Cynosura) have been spending most of our Sunday nights over the last few months doing at least one course together per night in a private room, all while hanging out in voicechat. It's been a bonding experience; we hone our skills, celebrate our victories, and grouse at our failures together.
The course designers don't seem to be resting on their laurels either, consistently putting novel challenges alongside scenery that's as gorgeous as you can expect from a modern low-poly art style; each course also comes with a Hard Mode version, setting punishing challenges against a shaken-up aesthetic (often the same course set at night). Of special note are the DLC courses, which tease a future for VR minigolf similar to pinball, where the mechanics of a base game are tweaked to fit a specific setting or licensed property. I only mention it because what's currently here is exceptional (this was written just after the release of the Myst course, which I recommend).
Also, don't worry about the scavenger hunts if they're too much of a pain to complete. They're not worth getting frustrated over, and Youtube walkthroughs can be your friend.
Hard not to recommend Walkabout Minigolf- I've really enjoyed playing it the past few months!