Once you have created a Gradescope assignment you will need to set up the Outline.
This allows you to define the individual questions and assign marks to each question or part of a question.
For Take Home Exams, when you set up the Outline the questions and marks possible should correspond with what is shown on the exam paper.
See the Gradescope help guide Creating an Outline.
The next step is to set up the marking rubric for the assessment.