No, the $10,200 does not include your taxable Social Security on Line 6b.
The $10,200 exclusion is for unemployment income, not social security. Social security is taxed differently depending on the rest of the income on the return.
For more information, see: New Exclusion of up to $10,200 of Unemployment Compensation | Internal Revenue Service
Is my Social Security income taxable?
Jobless benefits are not counted as wages under Social Security's annual earnings limit, which can reduce Social Security benefits for people who claim them before reaching full retirement age and continue to work.
-follow this link for additional information on how SS is taxed-
Are Social Security Benefits Taxable? | The TurboTax Blog
