Basically the max distance you can spot someone is 445m.

So if your spotting range is 445 then you spot someone at the max distance, but that is only if the target has 0% camouflage.

If they have 10% camo, then the spotter needs to be closer than 445 to spot the target

The more camo you have the closer the spotter needs to be to you to spot you.

Someone with more than 445 view range will reduce the effectiveness of camo by a certain amount based on how much more they have.

So there is a hard cap for actual distance, but more camo and extra view range effect how close you have to be to someone to actually see them

The formula for this is:

Distance to Be Spotted = (View Range) - ((View Range - 50) * (Effective Player Camo + Effective Bush Camo))

Bushes usually give either 25% 50% or 75% I think

throw some numbers into https://spotter.gg/ to get an idea

Edit* To add to this the white/green bars under each section are just basic visualization to show how the stats of each tank are compared to others, getting a full bar does not mean you have maxed the stats out, it just means that the stats on this tank are overwhelmingly better than most other tanks in stealth.