Since you took a distribution from a retirement plan, you
should have received a Form 1099-R
that reported the distribution amount and the taxes that were withheld.
When you enter the 1099-R into your return (including the
information about the taxes that were withheld) those taxes will be taken into
account along with the other income and deductions on your return. You may not receive a full refund of those
taxes, but you will get credit for them on line 64 of your Form 1040.
If you did not receive a Form 1099-R, then you should
contact Fidelity for a replacement copy.