Will it cost to get help with my start up on my Mac pro
Factory reset MacBook Pro problems with start up
I believe you are asking us if it will cost anything to contact Apple Support. Find out by contacting Official Apple Support. Asking will not cost you anything.
Or, describe the problem here. Answers are always free. Sometimes they are correct.
From the context of your question though, I surmise you are having trouble reverting your Mac to its factory new condition. Read What to do before you sell, give away, trade in, or recycle your Mac - Apple Support, and if you are having trouble, explain.