I want to know if I was charged underpayment penalities, where can I find this information?

[Carl]

that would be on line 79 of the 1040.

[KrisD]

Click on Federal Taxes

Click on Other Tax Situations  (along the top)

Scroll down to "Additional Tax Payments"

"Underpayments Penalties"

Start   or   Revisit

The screen will let you know if a penalty has been applied.