What are the pros and cons of getting the benefits at full retirement age or at age 62?
the advantage of taking your benefits before full retirement age is that you collect benefits for a longer period of time, the disadvantage is that your benefit is reduced.
Is there a way that I can know what would be the reduced amount I'd receive if I retire early?
yes, there's a chart that lists age 62 reduction amounts and includes examples based on an estimated monthly benefit of 1000$. You can select your age on the chart to see how much your benefit will be reduced if you retire before full retirement age.