Is the crack visible on the other side of the FE?
The usual fix is to drill a hole, fit and epoxy a short section of hardwood dowel, then drill a new screw hole.
Unfortunately, with the long crack
proper repair would probably require milling out a rectangular section and fitting and gluing new wood in place.
These FEs are rough inlet unfinished, but you could likely at least get it fit and usable before the opener