Will be withdrawing all money. Over 60 yrs old. I know they will take 20% for taxes. What about when I do my taxes? Will I be taxed again on what I received? Thanks.

The 20% is a down payment on the tax you will owe.

HOW MUCH that tax is depends on your overall income picture.

Since you are over 60 years of age, NO 10% Early Withdrawal Penalty is due.