In fact every country that qualifies for a World cup gets an appearance fee
It starts at close to a million US$ for qualifying and goes up depending on your performance.
I found a US player national team salary structure and it was broken down.
Now I am not comparing the US team to our TT team and the players salary, which we all know is chicken feed in comparison.
But I want to highlight the money that is made when you start to win games and win competitions.
As a club player with a salary and then you collecting this kinda change on top of that you have a nice std of living .
Source:
US Soccer