The deduction is not allowed on your federal tax return. I don’t know the exact rules for Pennsylvania, but if Pennsylvania uses the same definition of itemized deductions that was in place federally before tax reform of 2018, then in order to deduct work related expenses, you must be taking the itemized deduction, and you can only deduct work related expenses that are more than 2% of your gross income.
It would be much smarter to have your employer reimburse you for your expense
