Where should someone start with hideo kojima's games?

Peace Walker is the one people skip and shouldn't. It isn't in Master Collection vol 1, so you'd need the old HD Collection for it, but it sets up MGS V directly.

start with metal gear solid 1. the master collection has 1, 2 and 3 together. go in release order even though 3 is a prequel, 2 only really lands if you've played 1 first. death stranding stands on its own and you can play it whenever, just know it's slow on purpose.