You're unlikely to find it with 4 beats to the bar as it's written in 3/4. Here's a couple of links to free downlaods, one in Eb and and one in D, both scored for piano/vocal -
http://artsongcentral.com/2007/stevenson-the-last-rose-of-summer/ .
There are also several paid versions, digital and print, at Musicroom.com. Just type the song title in the search bar.
If you want it written specifically for Finale or Sibelius, then you'd be best to visit the user forums on their respective websites.