A legacy of Regan’s times is that 0.5 bln less people live under communism. You can argue that he did not cause all of it, but you can not deny that this was both his pledge and policy, and, correspondingly, legacy. This includes 2 mln Jews and decrease of support to all Arab dictatorships supported by USSR.
Economically, USA GDP per capita was growing 1-2% better in 1983-89 than world and major European countries (Germany, France), except UK from 1985 – that pursued same policies as Reagan.
for comparison, US did about same as UK/Germany/France in the 90s