give gold - gives of gold to the player (can also be negative), if you have a settlement selected it will give gold to the faction owning the settlement.
give region wh_main_chs_chaos, give gold 1000). Arguments in need to be replaced with valid values (e.g. Type the command into the text box, then press the button to the right. Open the text box by pressing a button on the top left (see first screenshot). Adds a bunch of commands that help with mod making and testing.