I Have a Scar About an Inch or So on the Side of my Head How Can I Get Hair Back There?

Hair transplant or SMP can hide scarring.  You would need an exam to make sure you're a candidate and understand limitation of the procedure.  The cost varies wildly from doctor to doctor, method to method, size of the scar etc.  

You might want to consider hair transplant. Follicular unit extraction is an excellent hair transplant technique for scalp repair and concealing scars.  The cost of hair transplant can range from $5 per graft to $12 per graft. An inch-long scar would not require many grafts to fill.

This can be excised and closed if the scalp is mobile. If not mobile a tissue expander will be needed. Transplants would be my last choice since the grafts do not grow well in scar in my 35 years of scalp surgery experience.