Will using water remove covid-19 if no soap is available?

Probably, yes. Coronaviruses are very fragile, and vigorous washing or rinsing with water alone probably is very protective. Alternatively if no soap is available, use an alcohol-based hand sanitizer.

If that is all that is available - would use that with vigorous friction with both washing and drying. However, this is not optimum. The combination of soap plus water will actually remove the virus from skin.