You have already said your son is a W-2 employee. W-2 employees cannot deduct job-related expenses on a federal tax return. There are some states in which job-related expenses can be deducted, but MD is not one of them. Sorry.
We cannot see the return you prepared. If you entered your son's W-2 correctly and entered his state information from boxes 15, 16, and 17 correctly then the amount of his refund from MD is being calculated correctly based on the tax rates in MD and on how much he had withheld. Double check the amounts you entered from those boxes.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
