Getting variable data from Parent

Hi everyone im kinda new to Unity, im trying to edit a variable in a parent with a child. I put the "Main Account Variables" in the parent object, consists of # of cubes and money stuff like that. I have a Gui object with children of different Gui menus, like a store ans builder. I want to access the money from one of the children. Currently im just trying to get it to post the amount

 Debug.Log(this.transform.parent.GetComponent("Account").Mu));

Mu is money Units

once i figure out how to GET the info, i can run with it, its just a matter of getting it. I have searched the web for answers, but nothing seems to work for me, sorry if this has been said elsewhere i just cant seem to find it