It’s countable.
Dollar has two meanings: uncountable dollar and countable dollar.
Dollar means dollar, and since dllar is a countable noun, you can add S, so dollar is a countable noun, it’s a noun you can count with.
The word “dollar” refers not only to the U.S. dollar, but also to some countries.
For example, the dollar used on a banknote.
I Fed raises rates as expected, Powell’s dovish comments push dollar back, pending US Q2 GDP data.
Please pay attention to the specific operation, the market is changing rapidly, investment needs to be cautious, the operation strategy is for reference only.