CR7 is currently on 750 goals. If he gets to 806 goals he will overtake Josef Bican as the top goalscorer of all-time.
Since moving to Juventus he is still scoring goals although not as many as when he was at Real Madrid.
I can see him reaching 806 in about two seasons time when he will be 37 years old.
I see Messi overtaking his goals though as he is on 729 and a couple of years younger.