Under the "Income" section on the left of the screen, scroll down to the entry for "Business Income (Sch C).  Under the Schedule C on the 2nd tab from the left you will see "income Statement", click on that.

The box labelled "gross receipts or sales" is where you enter your income unless it comes from a 1099-NEC, or a W-2 (which has its own input screen).

If it's from a 1099-NEC or 1099-Misc, enter those forms under the Income section, "SS Benefits, Alimony, Misc Income screen.  The tricky part is that those two choices require you to hit the "Form 1099-Misc/NEC" link up at the top right of that input screen.

If you need further help, please ask?

K. Gardner