Is it open for public bowlers trying to get better at their game and trying to learn?

You can bowl in the museum, but it's the ticket redemption game with the skeeball sized balls just past the restrooms.

You can't bowl athe the museum but they do have a building next door that professionals bowl at. When we went they gave us a lane to bowl in for an hour and we weren't professionals. So if you ask the person at the front I'm sure they will allow you to bowl if there aren't too many teams there practicing.

It is open to the public. It is a museum not an actual place to bowl. They might give lessons in the building adjacent to the museum. I have been in there and see bowling lanes.