So with two max freezes, the skolver should be immune to shiver.
Assuming one is able to get two shock maxes, that skolver would still lack one or two points for shock, wouldn't it?
My guess is if the above is true, then the user would need a shock pendant.
If it's not true, is there a way for just to get shock and freeze immunity on a skolver set (without trinks)?
(Skolver specifically for max dmg on striker + immunity)
You seem to be way off here. Let's take it from the top!
Resistance is measured in units simply called resistance or blah resistance (e.g. 5 shock resistance). The base unit is equal to a Low UV.
Low = 1
Medium = 2
High = 3
Max = 4
Most 5* armours that provide resistance provide four units, the equivalent of a Max UV. Skolver is one of these armours. Do note that Snarbolax items provide 3 freeze and poison resistance; not 2, not 4.
Something else you should note is that being a Guardian in LD gives you 2 units of resistance against every status. It's really neat!
Lastly, you probably should know what gives one immunity to statuses.
7 units of resistance are required for minor immunity, which is what haze bombs do.
9 units are required for moderate immunity. Notable weapons that cause moderate statuses are Alchemers and Polaris.
You can't be immune against strong statuses so you'll have to live with those.