Got this achievement being drafted late in the first round,
so it appears you don’t have to be the first overall pick but just 1st round pick.
EDIT: They appeared to have fixed the achievement so you DO have to get drafted 1st overall now, I have edited the solution
To raise your draft stock, perform as well as you can at the combine. Ideally try to complete every throw at the combine for a perfect score, if you fail just restart the combine part.
I can’t confirm if the questions you are asked before the combine affect your stock, but just in case I suggest you do these answers which I chose for my QB1.
Question 1: Either answer works
Question 2: “I’ve Grown”. YOU ONLY GET QUESTION 2 IF YOU DISAGREED WITH YOUR COACH ABOUT USING A SIMPLE GAMEPLAN EARLIER ON.
Question 1: Give them your phone
Question 1: “Front of the bus”