There is absolutely treatment for the disease. It's just that the treatment is largely restricted to ameliorating the symptoms while the root cause, the virus proliferation, is left to the immune system. (The possible exception are antivirals currently being tested.) Symptom treatment includes things like concentrated oxygen and mechanical ventilation.

Some cases are getting remdesivir which looks pretty promising.

There are trying to measure how fast it is spreading in different areas so they can take appropriate counter measures to avoid overwhelming the health care system in those areas. i.e. "flattening the curve"