score:3
Here is the situation:
The Department of State does have some companies that are registered with them that are allowed to submit the passport application on behalf of you.
But as Department of State says:
Customers utilizing courier companies who may call themselves "passport expeditors" do not receive their passport any faster than those applying directly at a passport agency. Courier companies are private companies, some of which are registered at our passport agencies and are allowed to submit passport applications on behalf of customers.
So you can try any of them that are registered but basically what you're paying for is their appointment time.