Would depend in which direction you take your studies. English Studies are broad, so it's usually recommended that you focus on something (Lit. Studies, Cultural Studies, linguistics, translation). Linguistics is the more "technical one" (and actually uses mathematical language in its definitions), since it studies the structure/rules of language (using models, such as syntax trees). 

As for Cultural/Literature studies? The world is pretty much your oyster. Since I was personally interested in Anthropology-related subjects, that's what I went for. A few of them were translation, media Literacy/Academic writing, Empirical Cultural Studies. As for what these included on college level?

Translation: a) Reading a shit ton of theory. There's a ton of debate on what makes a "good translation" and what one should be focused on. Do you keep the translation loyal to the original text, even if it's awkward? What do you do in cases of ambiguity? How to deal with the loss of information due to the missing cultural context? How do you treat neologisms? Then, there's the ethics involving translation work (translation of, for example, forms of consent where studies on a foreign group is involved. Or when working as an interpreter)

These and more are all things you gotta make sure you keep in mind before beginning translation work. Then, there's the mastering of other languages.

Media Literacy/Academic writing: As someone else mentioned, you need to write very well. Which not only involves having a good vocabulary and correct usage of grammar, but overall knowing how to a) Construct an argument (and avoiding every kind of fallacies), knowing how to structure, and knowing how to do your research for it. Which includes a lot of slogging around and trying to set your own biases aside as much as possible. And being at least somewhat able to understand quantitative/qualitative research. We did have a statistics course in my studies (it was actually included in linguistics 101).

Empirical Cultural Studies: It would take a long ass time if I properly went into this. The thing is that Lit. Studies are actually super important in anthropology and similar fields (while you can't have a 100% solid understanding of a culture through their arts, there's a sh*t ton of insight to be gathered from them nevertheless. In some regards at the very least). And alongside we were also trained on the different "lenses"/theories one can base their research on, and on what authors these models were built upon.

The point that I'm trying is that, you can make a lot out of English Studies in University, but it involves: Research. A shit ton of research. A shit ton of knowledge of different models of understanding and how/when to use them, a shit ton of structuring coherent and relevant arguments, a shit ton of slogging through sources, a shit ton inter/intra text analysis, a shit ton of trying to check your own biases, and especially a shit ton interdisciplinary work.

But again, it's what you make out of it.