I work from home, when putting in my deductions and credits, specifically internet, what amount goes there? my monthly bill or year total?

Are you an employee who receives a W-2 from their employer?  If so your employee business expenses are not deductible on a federal tax return, including home office expenses, due to the tax code changes in effect for tax year 2018 thru 2025.

As DoninGA said, if you are a W-2 employee, you cannot deduct your your internet (or any other unreimbursed business expenses).  If you are self-employed, you would enter the yearly totals for your expenses, not monthly amounts.