In order to play using your Steam save data on the Playstation, you'll need to set up Cross-Save. You can initiate that here: https://www.bungie.net/CrossSave . Please make sure you read everything and verify that the way you set it up is correct before pressing the final button to enable it, as undoing Cross-Save in order to fix a mistake you make will take 90-180 days, depending on if you purchased Silver recently or not. When selecting the main platform you play on, you'll want to make sure and select Steam, since that is the active save data you want to use. Once Cross-Save is finalized, you'll then be able to access your Save Data on the Playstation. - Keep in mind that DLC licenses are not part of your Save Data, licenses do not transfer with it, so you'll need to purchase access on the Playstation to any DLC content you want to play on the Playstation. Silver you had previously on Steam will also only be available to spend when playing on Steam. Season Passes and Dungeon Passes will transfer with your Save Data, so you won't need to purchase them on the Playstation if you already have them. Also keep in mind that Cross-Save does not move or merge your Save Data in any way; your Steam Save Data will always be your Steam Save Data, so if you later disable Cross-Save, it will once again only be available on Steam.