is a fake or genuine apple silicon case

MMQU2ZM/A is the product code for the Midnight Blue Silicone Case.

No way of telling if what you got is a genuine Apple product. Counterfeiters copy the boxes, labels, etc. In most cases, not perfectly. You'd have to compare yours to a known genuine product. An Apple Store employee should be able to help you.

Ah, in the lower image. Yes, the label on the right isn't as professionally produced. I presume this is what you got, and the left image is a photo taken of a real label at an Apple Store?

While not a good sign, it isn't conclusive enough for anyone here to say yes or no.