You don't know how much you mean to me= Di mo alam kung gaano ka kahalaga sa akin
How much is this= Magkano ito
How much angry at me= Gaano ka kagalit sa akin?
How much money do you have= Gaano karami ang pera mo? or Magkano meron ka? (Situational) The former is like insuational and insultive of someone imposing that he has a lot of money.