This video shows you how to project the frets onto the fretboard with Fusion360. The fretboard DXF file is made with an online fretboard generator. The file is imported as such in Fusion360.
UPDATE: I’ve made this guitar fretboard generator for Fusion360. This creates a fretboard straight or slanted, directly in Fusion. You can find it on GitHub (link)
Be sure to check it out!