Wow , that looks well used
.
The best you can probably do for it is start by giving it a good deep sand to clean it up and hopefully get rid of a couple of the lighter cracks. If some cracks are still left I would suggest putting some watered down pva into them to hold it together a bit more (and then send around where you put it in to remove the excess
) , and then get some bat tape around a few points on the bat , especially the toe as it looks a bit fragile at the moment!
Edit : When you say not using it for playing will you try and net with it or just for show?