The definition of 'goods' and 'services' specifically excludes money.
As per Section 2 (52) of CGST Act“goods” means every kind of movable property other than money and securities but includes actionable claim, growing crops, grass and things attached to or forming part of the land which are agreed to be severed before supply or under a contract of supply;
As per Section 2(102)of CGST Act “services” means anything other than goods, money and securities but includes activities relating to the use of money or its conversion by cash or by any other mode, from one form, currency or denomination, to another form, currency or denomination for which a separate consideration is charged.
Monetary donations without any "favour for favour" in return cannot be considered as supply of any goods or services. Hence out of definition of the scope of supply. No GST is applicable on such monetary donation.