If you have this amount of money in your saving to invest I think that you can chose to trade on forex or go into crypto trading its one of the best ways to make money online.
You can also consider investment with the stock market its a good option for investment but you need advice from those old folks
I think that an amount of $600 is pretty low amount of money for investing in any kind of business. I think that a person must have $3,000 so that they could invest in some kind of profitable business.