In the My Info section you would select Single if you are not married. Then after you enter the information for the dependents, assuming you answered all the dependent questions correctly, the program will ask you specific questions to determine if you are eligible for Head of Household. If you are eligible the program will give you Head of Household filing status.
See this TurboTax support FAQ for HOH - https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-filing-status/qualify-head-household...
This answer has been verified for accuracy by an Intuit expert employee
