In both PrimeBit MetaTrader 5 desktop and web application make sure the Toolbox is on. You can switch it on and off in the "View" section of the menu.
In the PrimeBit MT5 WebTrader, the menu is even simpler.
When the Toolbox window is on, just click the "History" tab, to see all your past transactions.
and , make sure toolbox is turned on (View --> Toolbox). History tab is there.