Not as much as you'd think; Rome is about the same latitude as Chicago, and they get a similar amount of sunshine (2,500 hours annually, according to a quick Google).
On the contrary. When it comes to skin type vs. vitamin D levels, then people with darker skin who live in the North are more deficient as you would expect.
Coincidentally or not, PoC/BAME folks have worse COVID outcomes in these countries, which could be due to vitamin D deficiency. There is of course socio-economic component too.
