Windows Phone 8.1 owners in Europe can now ask Cortana for the latest scores in general from many different European professional soccer leagues via a new server-side update.
In my experience the UK incarnation of Cortana is very poor, and can give a spoken answer to very few questions, instead presenting results from Bing (results that are WAY out of date.)
"handle requests for European soccer team scores" probably means page results from Bing, not spoken results. I can't test as I have no interest in football. 22 men chasing a ball around a field is not an exciting passtime!