Hello Kellyoconnor,
Welcome to the Community page,
So quickbooks self employed account is only a partial template of the SA103f so you would record business income, allowable and disallowable expenses and estimate income tax in the account and then you would have to enter these figures in the actual self assessment form on HMRC's website and then submit it on there. You cant submit it from Quickbooks itself as it is only a partial template for you.