The registered agent is the name and address of the person authorized to accept service of process for the entity.

I am an llc but registered with the irs as a scorp
That makes no sense. An "S" corp is an entity that was formed as a corporation that has filed with the IRS to be treated as a Subchapter "S" corporation ie., a flow through entity that does not itself pay income tax but instead passes such down to the shareholders. Similar to a partnership. As opposed to a normal corporate tax status that pays income taxes on profits at the corporation. See IRS form 2553 for instructions. A limited liability company isn't a corporation. A limited liability company defaults to partnership tax status unless you've filed a Form 8832.