As a generalist degree, it's as serviceable as any other. However it's a very niche area, so unless you have a deep and specific interest in that you may be better off doing another such "generalist" degree; at the very least, you have more options for courses to apply to (since in that realm it would be that, maybe ASNAC at Cambridge, or Celtic + something at Oxford if they start offering that again, Nottingham which I think would be via English Lit, and your other application options being literary or historical subjects...).
I have a friend who is very interested in the area, and plans to do a PhD in that area. He pretty much structured his entire (US) degree around trying to approximate in some small way that course, to continue to a PhD. He also talks about related historical topics constantly and owns about 4 different versions of Beowulf "to compare them", so...that's probably an indicator of who they would hope would be interested in the course, although I'm sure they expect less specifically interested people to apply under the belief it's a less popular (probably true) and thus easier to get into (probably not) course offered by them.
While the "Old" part of the course is very niche, however as Snufkin noted the Scandinavian language may be something - as those languages aren't the most common, and all of those countries have appealing opportunities. I would note though, most people in Sweden speak flawless English - in fact most Scandinavian countries in general have high proportions of English speakers who have very high proficiency in the language. I would suggest Icelandic might be the most valuable one in terms of "roles that require that language which English is not an alternative option", although is perhaps less relevant to the core area of Viking and Old Norse studies compared to the broader mainland Scandinavian regions.
If as you say you are interested in those broader areas, then it may well be a course worth considering. Do reflect on whether the specific niche area it focuses is on is of particular interest, or if you are more generally interested in those areas - if the latter, you may want to consider something broadly within that realm but with a wider focus, such as Archaeology (including Egyptology/Assyriology) or Classics or Classical Civilisation/Studies (I'd note for Classics itself, there are very often routes into the subject without having taken Latin or Ancient Greek first, including for both Oxbridge versions of the course). You may also find something like History of Art may interest, although that again has a slightly more niche perspective like ASNAC/Viking Studies type courses.
Generally speaking as Snufkin noted, your degree subject isn't that important for most grad roles, so much as how you are able to demonstrate it makes you an appealing hire in interview. This depends (almost) entirely on you however. Your university generally should have some facilities and support in employability though no matter what course you do, and this may vary between universities (although to a lesser extent between such "generalist" courses - "specialist" courses such as many STEM courses may have some more specific advice/recommendations/opportunities relating to the relevant industries which varies between the courses though).