When a girls mad at you and doest what to talk how many days should you wait to talk to her?

Perhaps give yourself and her some time and space leave it for a week, till you both have at least a chance to calm down a bit. Phone her and express your thoughts and feelings be clear on who did what wrong and if you need to apologize then do so, if she does not accept that then perhaps she is not really what you need in a girlfriend, do not push your self on to her just let it go, time may settle things and you may hear from her but do not count on it, keep yourself busy meanwhile. As the saying goes there are plenty of fish in the sea!