Hi there, @Holabty7.
We certainly wouldn't recommend taking the Gear Fit 2 swimming. Unless you're referring to the Gear Fit 2 Pro?
However, with a cracked screen chances our that water would be able to get inside, and we'd recommend popping into your local Samsung Support Centre to get it looked at. You can find the closest Support Centre to yourself here.
Welcome to the Community! :smileyhappy: