Is the profit of foreign exchange trading in dollars?

It is calculated in dollars. You can understand how trading is profitable according to the following formula:

Formula of foreign exchange profit amount: profit amount = profit points × 10 USD× lots.

note:

The smallest change unit of exchange rate is "point", and the last digit change of exchange rate is called 1 point (1 point). In foreign exchange transactions, the relationship between the number of points in all currencies and the US dollar is: 1 point equals 10 USD. For example, the pound/dollar has changed from 1.37934 to 1.37940. It is said that the pound has risen by six points.

So according to the above formula, you can simply calculate how much profit you can get from a transaction.