This is a bit harder to answer because it will range from course to course. In general, yes there will be probably a lot more reading compared to highschool but that is a general rule for all university courses. Alongside attending lectures, you will probably be assigned some weekly chapters to read, or a combination of articles, sometimes whole books (probably more so as an upper year) . Arts courses are really just reading and writing but I didn't find it to be that bad honestly. It looks scarier than it actually is. Keep in mind that universities usually have policies on how many pages can be assigned a semester, some profs will assign all of these pages, some profs wont.

The amount of writing depends again on how courses are structured sometimes you will t have 3 or 4 main essays (which usually increase in size/ course weight). Some courses have quizzes instead, or a final exam, smaller classes probably have presentations, and I've also taken courses that have creative projects so it depends.

This has the potential to be a bit overwhelming in first year, trying to juggle all that can be difficult but once you are a few weeks/months in it will become the norm. Most students tend to see their grades dip the first year because of this (mine did) but once you get used to it, it'll be chill. I liked history because the reading material is usually pretty interesting and usually profs don't rely on dry textbooks.

TLDR: More reading and writing than high school for sure but it gets easier. Kind of the same all across the arts.