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

If your music is rather complex, we recommend using SharpEye Music Reader 2 combined to FORTE Home or Premium

Download a SharpEye Music Reader trial version here:
http://www.fortenotation.com/en/products/sheet-music-scanning/sharpeye-music-reader/

Download a FORTE 7 Home trial version here:
http://www.fortenotation.com/en/products/writing-scores/forte-home/