Good luck!
Cool thing about 5Ks is that you can do one now and another one 2 weeks later.
Still worth investing in a good 5K season though (I e. you do a lot more sprint intervals and threshold runs). I prefer long distances but spent the past 5 months or so solely focused on improving my 5K times and it’s making me a much better runner, including for long distances.
I think it’s just for the cheap version of Windows, like “Home” or whatever.