It looks like the axle nut has been beaten on with a screw driver tip or chisel, and almost like it's been cut.
Honda parts should have one or maybe someone here has a spare can offer up.
If the bead is leaking then the first thing I'd do is remove the tire, clean the wheel bead and tire bead surface.
Look for any corrosion in the aluminum, it should be smooth.
Change the valve stem while your at it.
sorry joe the nut on the axile and where the air was leaking. bubble show air leak. hit mag and you can see the nut real well, glade your doing better,