From Milano Malpensa airport it is possible to reach Torino with three shuttle services that reach the city centre in about 2 hours.
Arriva: timetables and fares: website
Flibco: timetables and fares: website
Flixbus: timetables and fares: website
Alternatively, it is possible to reach Milano Centrale railway station from the airport with the various connections and then by train - including high-speed trains - to Torino.