How long does it take to wash/rinse hands without soap until virtually all bacteria and viruses are gone? Let's assume worst case scenario where your fingers tore through your toilet paper and you got a significant amount of shit on your thumb and fingers.

It says here that "when the volunteers washed off the mucus by rubbing their hands together under running water — without soap — the flu virus was eradicated within 30 seconds."
https://www.minnpost.com/second-opinion/2019/09/study-washing-your-hands-even-without-soap-is-more-effective-than-hand-sanitizers-for-flu-prevention/