Any trades that have been executed during your current trading session will be visible just beneath the price chart. Here, you can see both open orders and executed trades for that session.
To view a full history of your completed executions, navigate to Settings ⚙️> Order History > Here you can see a detailed table of all of your trading history.
On iOS/Android mobile app, simply go to History tab in the bottom navigation bar and select the desired time period by clicking the button in the top right corner: