Help us understand what you mean by this question. What kind of business? And transfer it to where?

Remember that we in the Community cannot see your private tax data, so we'll need some background in order to be able to answer your question.

And transfer it FROM where?  From 2019 tax return or from Quicken or QuickBooks.  What kind of business?  Do you need to file a separate Business return or enter it on Schedule C in your personal return?