He looks pretty young for a goldie (~1 yr old). In the absence of any other symptoms, those white spots look like wen spots. It's just a growth phase they go through as the wen develops. They should go away after a couple weeks.
Otherwise, keep an eye out for bacterial/fungal infection while the wen is developing, especially if the area turns a dark red (hit that with Kanaplex ASAP). If it starts to look light red, slimy/cloudy, or fuzzy, easiest cure is to daub the area with H2O2 using a moist (not dripping!) Q-tip. (Avoid eyes and gills when using H2O2.)