Got 34% plagiarism on coursework

So I think I f***** up a bit. I’m in third year and my latest coursework came back with a score of 34% plagiarism. The work was weirdly structured in that it was basically a bunch of screenshots, with a short sentence describing each screenshot. Because of the setup and the fact that all students would have the same screenshots (and therefore VERY similar sentences/information), I was a bit dumb and didn’t think I needed references as the short sentences were very general and very short, usually around 11-12 words long.

So now I have this pretty concerning plagiarism score. Will my Uni penalise me?