If at all. At least in Italy, outside of tourist areas or quite often even in tourist areas, you'd have to point and wave to talk or use a translation app. Even 20 somethings barely understood any english.
I lived in spain for 4 months in a tourist spot(out of season) and they couldnt understand our english. They had shops with signs like "we speak english" but they didnt. At least italian is easier to understand with english than spanish. And then theres the french who speak perfect english but refuse to.