power steering stopped working the high side hose is leaking

If the pump stopped working then this may be the pump itself.

https://www.2carpros.com/articles/how-to-replace-a-power-steering-pump

If the pump leaks all the fluid out then it would stop working but if there is still fluid in it then most likely the pump is the issue.

Below is the process for this. Please let us know if you have other questions. Thanks