A couple of definitions I found using Google.
A person who has been forced to leave their country in order to escape war, persecution, or natural disaster.
A person who leaves his or her home or country to find safety, especially during a war or for political or religious reasons.
Using Google and asking “how many refugees are there?” I found a low of 25,000,000 and a high of 80,000,000.
Some websites and/or articles say most of these folks have very limited, if any, access to food, shelter or healthcare and that some are in danger of bodily injury from persons.