Depending on a number of factors effecting the completion, including the complexity and the lenth of the project, your level of subject matter expertise, and your time management abilities, you might be able to do an assignment in a single day.
If the assignment isn’t too difficult and you have a solid grasp of the subject, you might be able to do it in a single day with careful time management and concentration.
The task can take more than a day to do if it’s really complicated or needs a lot of research. It’s critical to evaluate the assignment’s needs and estimate how much time it will take to finish it.