There are a lot of mission ending music. here's an example:
MissionSucceed() -- this function will end the script, and launch the MissionCleanup() function
PlayerAddMoney(amount) -- idk how to make the little text
SoundPlayStream("MS_NerdPassStinger.rsm", 0.5) -- 0.5 is volume, default volume is 0.5
and if u wanna find more pass stingers, rip the music audio to listen to it.