Welcome to BB JM. I’m sorry to hear your rabbit is feeling ill.
Because rabbit conditions can decline very rapidly, I suggest seeing if you can bring your rabbit to an emergency vet immediately. Not moving, standing, eating, etc.. for longer than 12 hours (which I assume would be tomorrow morning) can have disastrous consequences, including death unfortunately. It’s very important she’s seen by a professional ASAP.
Can you describe the circumstances approaching her illness? The more information you can provide a veterinarian, the better. Was she pooping a lot of furry poops, so maybe there’s a blockage? Was her appetite already decreasing before today? Has there been any major stressors which may have triggered her to stop eating?
The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.