I would like to scan and transpose music. Which FORTE edition is the right one?

FORTE Premium features a scan module. Please check whether the results are satisfying for you.
Once you scanned your music and imported them into FORTE, you'll be able to transpose the music.
Here's our tutorial about scanning:

Download a FORTE Premium trial version here:
http://www.fortenotation.com/en/products/writing-scores/forte-premium/