With a rapidly changing industry, qualified auto body repair technicians are in short supply, just as they are in the engine repair business.
The problem with the auto body repair business is that it's toxic AF. Most people don't last long in that environment, sometimes literally. When you spray paint, it's around half solvent. There are water based paints, but they don't perform as well as the solvent-based ones. When unibodies are painted they spray the whole thing and then bake the paint so hot that it reflows, which is how they get a good result even with water-based paints. Body shops can't do that when they make a repair.
Engine repair is much less toxic, but also in much less demand. By the time most vehicles need an engine rebuild, they need a lot of other stuff too. Doing an expensive engine job and winding up with a sloppy old car anyway makes little sense. And the number of people needed is waning as we shift towards electrics; not rapidly yet, but meaningfully. I wouldn't go into that career at this point, it would be exactly the wrong time.