Ford Torino how much for a 1972 4 door?

Depends on who is selling it and the negotiation skills of the buyer. If you mean when it was new, a base 1972 Ford Torino 4-door sedan sold for $2641 (6cyl) or $2731 (V8) FOB Detroit back in the day. Gran Torino 4-doors were $2856 for a six or $2947 for the V8.

Source: grantorinosport.org