After accumulating your points, those translate into rewards that are distributed every Thursday at: North America: 12am PDT / 1am MDT / 2am CDT / 3am EDT UK/Ire: 8am BST Europe: 9am CEST / 10am EEST Asia/Oceania: 4pm JST / 3pm AWST / 6pm AEDT
You can boot up FC 25 once the time above arrives, and the game will alert you to rewards you have to redeem. You can then open up the Cards you've earned and claim any Coins, in accordance with the Rank you're currently at.