Oh that's not a lot at all. A single Iron Dome battery has 60-80 missiles and of course no one is going to launch entire barrage in one place at once (plus, overall stocks of missiles can't be high, i mean even Russia can't manufacture more than ~1.5 Iskanders per day, and those launched from Iran must be more expensive simply because of size).

As we can see, a smallish minority of them slip through so any damage to Israel can only be psychological/due to disruption of civilian life because of sheltering, disturbed sleep due to alarms etc. No actual damage as in - meaningfully reducing Israel's capacity to wage war, is possible.