Donald Trump is worth over three billion dollars as of now. He built his empire over the course of several decades. Usually, a person who is self-made means that he or she made their money on their own without receiving money as an inheritance or gained their money through their family. In this case, it is difficult, Trump did take after his father who was also a real estate developer and made lots of money doing the same thing that Donald Trump did during his life to make the billions that he made.
However, Donald Trump did earn most of his money on his own by developing real estate. In a sense, the president is a self-made billionaire in that he made his own money even if his father was in the same business.