Fusion supports feature creation (note, this does not include full feature regeneration, as Fusion is history-free). The steps to Extrude to a face are:
1. start the Extrude command
2. select the profile to extrude. This will display the gadgets for dragging the profile, distance entry field, etc
3. move the mouse over the face to Extrude to. A prompt will display that reads "select to snap"
4. click this face, the Extrude will snap to this face