Just turned round for a second and my son had climbed up and rinsed his huge bubble wand in the aquarium water (the kind you blow bubbles outside with)
Is everyone doomed??
It’s 60l and I took almost all water out and replacing it now.
It’s well planted.

if everyone does which from reading online sounds like they might, have I go any hope of saving anything else? And how?
I also have a lot of shrimp.. are they doomed too?

how long does it actually take the fish to die of soap contamination?

Is there anything I can do to save them? It’s my sons bedtime in a mo as well!
Wait and then will all the plants die as well or if I manage to save them can I reuse them in another tank? Will I have to get rid of the substrate and the wood?

The large water change, and swiftly after the event, was the correct course of action. It might be worth doing another water change today (~50% should be fine), just to ensure that there are no traces of soap contamination left in the tank.

If the fish and shrimp survive this, then the rest of the decor (plants, substrate, wood) will hopefully be fine - but a thorough vacuuming of the substrate and rinsing of the plants probably wouldn't go amiss. If the fish and shrimp didn't survive this, then an extremely thorough vacuuming and rinsing of the plants would be worthwhile.

I'm keeping my fingers crossed that your swift course of action to rectify the situation has "saved the day". Let us know how the tank is today.