If a trader tells you that they made 100 pips profit, you don’t learn anything about their money situation. To know the size of one pip in greenbacks in this situation, multiply 0.0001 by the lot size.
To calculate profit or loss from pips where the dollar is the quote currency, you just need to understand that one pip is $0.0001 x lot size. All of this may seem confusing at first impression but anybody who starts trading will extremely soon understand what a pip means in practice. Currency trading pips are a handy tool for measuring and recording price movements in currency trading.