It's not too much of a project to repair it. You will need to remove all surrounding components, and scrape off any sign of corrosion. If the traces are damaged, you need to repair them with thin wire. And, it would be a good idea to put sockets under any surrounding chips. The corrosion will leach under the chips so you need to be careful there.
When corrosion attacks any of the solder pads, it requires careful scraping of the copper pad to get solder to stick. I have done dozens of acid-damaged board repairs on some old Jennings machines, and never had one fail me.
Battery corrosion goes deep, so it will take patience.