I am 1/3 beneficiary to deceased Mother’s home.It sold and the executor is demanding by social by tomorrow.Must I give that to him?

What is your "social"? Do you mean your social security number?  That seems unnecessary.  The title company handling the sale should simply issue a check in your name.  It could ask for your bank routing and account number and send a wire transfer or electronic check instead.  But no one needs to have your social security number to make a distribution of your share of the estate or to report that that has been done.  At most, the executor needs you to sign a Receipt and Release once you have received the funds and anything else due you from the estate.