I am suppose to identify some of the features and values you associate with a

just society. I want to write about healthcare but i don't know where to start
can someone please help.

2 answers

You need to decide what values you consider part of a just society.

Make a list -- and then make an outline from your list. Write the body of your paper before you write the introduction.
Ideas:
The history of hospitals

Services performed for free

The advantages of a healthy population

The rise of knowledge about biology

Inventions that became medically useful, even though the inventor had no interest in medicine,(the MRI happened this way).