I did not have a business I worked for a company as a contractor. I only have a 1099MISC. The questions are asking me for business codes. How do I take this off?

The IRS requires you to enter a NAICS code even if you are just an independent contractor.  The code is for statistical purposes only so look for the best description or use the default 999999 (unless you are filing a Mass state tax return, then you are not allowed to use the 999999)