Investing In Stock Market is the classic way to get rich.
Investing in bonds is another classic way to get rich.
Cryptocurrency has also made a lot of people super rich.
Gold is evergreen option to invest.
Flipping real estate is another way to get rich.
Invest in yourself and learn high value skill and make money of it.
Buy Antiques and sell them for profit
Invest in high quality watches they have high reselling values.