It seems obvious to me that the dipstick is screw in. I don't think I've seen a bike without a sight glass that uses any other kind. It's not something you want to have come off.
The key is always motor off and on a level surface. The latter part is the hard bit. If you had a sight glass on your bike, you'd see how even a slight angle can make a big difference in how much oil shows up.
Zero, once again, stop, read the post again. He don't want to know if the dipstick screws in but when you are reading the oil level, do you unscrew it and read it or if you unscrew it, wipe it off, return it without screwing it in, remove it and read it. OK?