Will the services rendered by a worker from an unorganized sector be counted in GDP? My guess is it won't be because the unorganized sector isn't captured in GDP? but I read somewhere it will be. not sure if I am wrong or it was an error in the answer key.

please help
If by ‘un-organized’ sector you mean gray and black market then these activities are not directly recorded in GDP. For example, if you pay 10e to a neighborhood kid to mow your lawn it won’t show on GDP as a spending. Although, you could say those activities still indirectly can increase GDP, as if then that kid goes and buys a lego at a store that would otherwise not be bought that purchase would raise GDP. But I don’t know what exactly you mean by unorganized if. If the spending/incomes in a sector are tracked by statistical office it will show up on GDP.