If you are renting, property taxes will be included in the rent. The owner of the property pays the taxes. The owner will probably also be paying for services like water, sewer and waste disposal if these services are not included in the property tax bill (where I am, water, sewer and waste are a separate bill from property tax and water is metered so based on actual consumption). This charge will also be hidden in your rent. Your rent may or may not include utilities like gas and electricity. You should ask if the LL doesn't mention utilities are included in rent.
The property taxes cover municipal and county services - municipal are schools, library, police, emergency services, local/municipal administration, meals on wheels, any social services available like a mental health or children's health service, animal control and licensing, snow ploughing, leaf removal, road repair, parks and rec. County services include any county health centre, sheriff's department, jail, county court system (judges, staff and buildings), child welfare, all county level administration and offices, plus lots more.
All of this is paid for by means of a valuation of the property you own (often directly into an escrow along with your mortgage payment) or live in (included in your monthly rent). You pay an amount based on the rateable valuation.