Since June 2020, PlayStation Plus subscribers who play GTA V Online every month get GTA$1,000,000 credited to their account within 72 hours. This benefit will be changing from next month, with March being the last month to get this automated credit.
From 1st April 2021 onwards, you will need to claim your monthly GTA$1,000,000 benefit directly from the Playstation Store. At the start of each month a new GTA$1,000,000 product will be available on the PS Store, like other similar PS Plus pack benefits. Once you claim the product, GTA$ will be deposited into your in-game account upon store redemption.
As before, you will continue to get GTA$1,000,000 until GTA V launches on the PS5 later this year. As of yet, the release date for the PS5 version of the game has not been announced.