Do I need a business tax I.D. Number as a Rodan and Fields consultant?

No, you can use your SSN to claim the income as a Rodan and Fields consultant on your personal tax return. 

This is helpful! Only, I didn't seem to have the option to use my SSN (see below), so I had to look up the EIN for Rodan + Fields. In my situation, not only do I not have anyone working under me, but I didn't receive any income from R+R, nor did I even receive a 1099, so...I really struggled when inputting this part of my Turbo Tax Return this year. It was confusing. :o(

Agreeing with @CarolynM ,   you report all your income and expenses with this  business ( R & F consultant ) on schedule _C as part of your individual 1040 return. 

I wonder though what you mean by "didn't receive any income from R+R"  - if no income and no expense, then why are you wondering about  business id and 1099-misc? what am I missing here?