My testfor scoreboard command is not working
The issue is that
/testfor @p {score_money_min:5}
doesn't work because of two reasons. Firstly you have to use square brackets and join the selector and data tag. Like so:
/testfor @p[score_money_min:5]
then the last problem is that you have to use '=' in selectors and not ':'.
/testfor @p[score_money_min=5]
Hope I helped!