Those similar kinds of questions in the 'Personal' side are for employee business expenses. This would be for expenses you had to pay as an employee receiving a W-2 for which your employer did not reimburse you.
If you have entered your expenses as part of your self-employed business income and expenses, you do not need to go through it again in the 'Personal' section of your return.
Additionally, starting in 2018 through 2025, employee business expenses are not deductible except for in certain state returns due to the tax reform changes.
