...\SiderAddons\livecpk\[ModName]\common\etc\pesdb\Player.bin
Players on consoles cannot access the Player.bin file directly. Instead, they use .ted or .bin export files which are stored in: Player.bin Pes 2021 Location
The file is not immediately visible. It is packed inside a .cpk file (usually dt10_x64.cpk or similar). Player.bin Pes 2021 Location