The way to use the Scorecard is to note how an institution’s particular major “pays off” relative to other majors at the institution and, as well, compare one institution’s salary with another’s for a particular major (and normalized for cost). Salaries by major are a new feature this year and it’s very possible that the data is “dated”; however, that’s true for all institutions so you should still be able to compare. Another thing to realize, of course, is that salaries are particular to job opportunities by locale, so an English or Poli-Sci major might earn more in NYC than Orlando. It’s not a perfect comparison, but it’s more information than, say, what was available only a short while ago.
You can also compare overall grad rates between institutions, while keeping in mind that Honors College will have a higher 4-year grad rate than the general population.
Fordham, which was one of OP’s choices, shows median earnings that are nearly 60% higher for an English major and about 40% higher for a poli-sci major than UCF. Now, again, locale might have something to do with that, but selectivity is a factor as well. It’s just harder to get into Fordham than UCF, the average test scores are higher, more well-known faculty will be employed there, etc. However, if UCF’s honors college has similar selectivity stats and a solid liberal arts program, then it’s probably going to be an unequivocal choice given the lower cost.
In order to determine current popularity of an institution’s major, you should check out the NCES data on College Navigator (I believe this is a DOE website as well). Here is the link for UCF, current through 2017/18:
https://nces.ed.gov/collegenavigator/?q=university+of+central+Florida&s=all&id=132903#programs
One thing about poli-sci in particular is that it might all be offered online. UCF is one of the better-known “online” education universities. It’s how they are able to have so many undergraduates. One would need to understand how much of the poli-sci major is offered on campus in a small seminar format (ie an environment consistent with the liberal arts). Here is the link to help one determine that:
https://www.ucf.edu/degree/political-science-ba/
Of course, there may be some professional degree programs related to poli-sci with a larger presence on campus. And for psych/counseling and social work (which is what you are interested in, right?) it might be a different story altogether.