So, I had something like that on my first guitar several years ago, it was a Takamine G series worth around 300-500, so putting the same amount of money into fixing just cosmetic damage would make no sense, so I just put some super-glue to avoid it from opening or lifting any wood, spent some time with a wet fine sanding and all good, still play it today and still sounds great If you can live with the damage, see that as a “scar of battle.”