Welcome to the forum. It looks pretty low…
Not sure which height you’re interested in knowing - ground clearance, seat height, handlebar?
Based on the photos with the jack underneath, I’d say 3.5 - 4” ground clearance at the low point under the frame. Seat height looks like 22-23” depending on the seat you install. The dude in the photo looks about 5’9”ish and the seat is at the top of his belt line when he’s on a knee. Maybe it’s only 18-20” seat height. It sits a little higher than the “Big Wheel” I had as a kid.
https://voodoovintage.com/products/suzuki-ls650-s40-savage-mk-33