If the federal taxes owed on your income in the US is greater than the taxes you paid in Italy then you will owe the difference.
The foreign taxes paid should be on Schedule 3 Line 48. The totals from Schedule 3 flow to the Form 1040 Line 12. The taxes on Line 12 are subtracted from the taxes on Line 11 and entered on Line 13. Total taxes are entered on Line 15.
After any tax payments if you owe federal income taxes that amount will be entered on Line 22 of Form 1040.
