What do I do if my AirPods went through the washing machine and they turned on right after but aren’t now?
How can I fix my AirPods after they went through the wash and they worked right after but not now?
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You don't say which version of AirPods, but for most variants their water resistance is suitable for tolerating usage in a rainy environment, or sweating in a workout. This is nowhere the intensity of water exposure they would get in laundry, even without the additional damage and increased corrosion by hot water and detergents.
I think your AirPods are almost certainly destroyed, and the best solution will probably be replacement with new AirPods.