This is good to know. Still, even for US athletes, it is important for potential recruits to match their level of play, academic and environmental fit to targeted colleges as well as cost of attendance. Even a D1 golf scholarship is likely to be partial. If financial aid is going to be required, then different schools have different levels of generosity and often different policies with respect to international students. In terms of a Venn diagram, you will need to find that intersection of schools that fit academic, golf, type and place of campus, and financial requirements/limitations.
Some good suggestions on schools in this thread, but creating a target list of schools based on your son’s and your family priorities is a must do first step. Some (probably most) families start with school fit first (academics, type of school, location) and then see which have fitting athletic programs. Others go sport first, especially the super elite athletes. The initial list can be very large as it will be whittled down as you consider all the defining parameters, including cost.