I can’t see anything that wrong with the frets from the picture. If anything the 12th fret looks a bit long. I have the tools, so I’d run a fine file down the edge of the board to try and even things up slightly. You may not feel thus is something you could do or would be prepared to do.

The fretboard is ebony. Not all ebony is solid black, and most ebony is figured. This figured ebony has often been just thrown away before. But now with more and more woods become endangered, it is being used in guitar building. So what you have is perfectly natural. You are not going to get a dark ebony board on a low-cost guitar kit (it is mow very expensive and hard to get), but you get the benefits of the smooth dense wood for the fretboard but with more affordable and less endangered figured ebony instead. I’ve had a couple of guitars with figured ebony boards (some very figured) and I like them. There’s always the option of using a black stain if you don’t like the effect.

The nut is an awkward one as you won’t get a drop-in replacement because of the angle. You’d have to get a blank and cut your own nut slots. Which requires having a set of expensive nut files. I wouldn’t leave a nut with square edges at the ends, I’d round them off, which would take care of some of the damage. On a Gibson-style nut I’d also do a full round-off the rear of the nut, but I’d only do a very gentle rounding of the back of the nut on a Fender-style slitted nut like this. If the nut is quite tall and if the nut slots can be cut a lot deeper, then you can also file down the top of the nut so that the nut is only just tall enough to cover the strings. But without nut files, you’d need to file down the bottom of the nut to lower the slots, which means you couldn’t also file the top and remove the damage. So you’d really need to be sent a replacement nut.

The chipped veneer is the killer though. It’s not easily repairable and you shouldn’t have to. If you were planning on a sprayed sunburst finish, then you could fill in the chip and the sunburst edge should cover it. But if you were planning on a single colour top, then there’s nothing you can do but return it.