Did you have the game? Ok, i haven't the game but if i didn't remember bad, you have to download Ego ERP, and PSSG Editor, just go inside textures cars, export as dds, and edit the numbers, just paste up the numbers above the numbers of F1 2020. You have to edit the .ERP files inside folder 2020_asset_groups>f1_2020_vehicle_package>teams and inside you see all teams, ferrari, redbull ecc... inside there is .erp file textures!