iFixit is the only place that I’m aware of, but “most” might be an exaggeration unfortunately. They have the most popular products certainly, but for less mainstream devices you are entirely out of luck.

I support the idea behind iFixit, so in the future I might prefer to buy from their store. Otherwise, I’m not sure how else to expand range of devices that you can get a repair guide and repair score for.

And I know of absolutely nothing for non-computing devices, ie. washing machines, fridges, TVs. I think such information is really important, but there is no incentive for anyone to provide it.