Play the game and created a saved game file. Use a text editor to edit the "game.sii" file in the most recent saved game folder in the "/UK Truck Simulator/saves" directory. Change the value of the reputation_points line as desired.
To enable the cheat console edit the config file in my documents / uk truck simulator to say 'Unset G Consol '0' rather than 'Unset G Consol '1' then you can press ~ during gameplay then enter the following cheats.
Create a backup copy of the file before proceeding. Play the game and created a saved game file. Use a text editor to edit the "game.sii" file in the most recent saved game folder in the "/UK Truck Simulator/saves" directory. Change the value of the money_account line as desired.