https://psteamcommunity.yuanyoumao.com/app/271590/discussions/0/3164335241619892267/
Others say level 5, or say up to 72 hours - there is some variance in delivery.
Don't have after level 10, or 72 hours? - https://support.rockstargames.com/

Basically - go play the game. You don't 'activate it' - it comes with the 'premium' gtav purchase. You 'have' it, you 'will be eligible' for the stuff from it when you meet whatever req's. Some stuff 'might' be immediately free on the various phone/internet/store pages. You'll also get notifications on your phone ingame when stuff is available. I recently went through this on a new account and I didn't get the ingame notification for the free items til about an hour of playing - obviously this may vary.

As for the money -
The GTA$1,000,000 included with the pack can take up to 3-10 days to arrive to the account.

Uninstalling and reinstalling the game does absolutely nothing for you. Since R* quit selling the 'standard' edition and is only selling 'premium' editions - the CESP is tied to your account at steam/R*'s end. You've already downloaded all the files necessary. There really is nothing you can do but wait - anything else that 'worked' is woefully coincidental short of contacting R* and they 'apply' it faster (if they even can/will).

Edit - more info/from R* / ticket response / how to get items, delivery, etc -
https://psteamcommunity.yuanyoumao.com/profiles/76561199246769996/recommended/771300/
-and more info, including way to 'verify' you've purchased CESP zzzz -.-
https://psteamcommunity.yuanyoumao.com/app/271590/discussions/0/3282573272840023630/#c3282573272840346932


Shark card only purchases -
https://support.rockstargames.com/articles/206547617/Delays-in-GTAV-PC-In-Game-Cash-Arriving-From-Steam-Shark-Card-Purchases
and
https://support.rockstargames.com/categories/200013306?step=fe1a3922




1 of many old threads -.-
https://psteamcommunity.yuanyoumao.com/app/271590/discussions/0/3202618375246467639/#c3202618375246477805