Who is the secrataries for excutive , judicial, legislative?

There are not "Secretaries" for these branches of government.The President is the head of the Executive Branch, the Supreme Court is headed by the Chief Justice and the Legislative is headed by the Speaker of the House and Senate President(the VP).The VP only gets to vote in the event of tie vote in the Senate.Effectively the Senate Majority Leader leads the Senate. Secretaries are those of State,Defense, etc. They are nominated by the president and approved by congress. This system is referred to as Advise and Consent.Brief , but hopes it help.