What are the rank top 5 countries in latin america

Before you can rank anything, you need to choose the criterion.
You haven't specified what the countries are to be ranked BY.

Do you want the top five countries according to their population ?
Their annual per capita income ?
Their land area ?
The total annual value of their exports ?
The literacy rate among their adults ?
Their birth rate ?
Their infant mortality rate ?
Their cost of living ?
The number of religions practiced in the country ?
The average annual number of murders in the country in the last 10 years ?
The number of households with internet access ?
The number of Nobel prizes awarded to its citizens in the 20th Century ?
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etc.

Just do the math, then think