I got the disk for origin edition which came from online shopping and not the activation code. Can I still redeem or not?
No you cannot. Chances are you got scammed out, all physical copies of Overwatch come with an activation code which is printed on the CD case and can only be activated a single time to a single account.
If you’re looking for a good deal on Overwatch I suggest you check out the current Humble Bundle monthly subscription offer which includes Overwatch. Alternatively you can purchase Overwatch here: