Do u need to learn Swift in order to transfer ur data (strings, int, etc.) to Xcode?

After I created my binary file (encoded simple strings, int, etc) in Unity and build my project to iOS I need to tell Xcode what data I want it to send to lets say the iCloud. My class that I created in Unity is saving all the needed data for the game. Is there an easy way to "synch" or tell Xcode that that's the data I want to save to the iCloud. Btw since I'am building to iOS is my C# code after completing build not already turned into swift or object- c? (I have contacted Apple about this but they were only telling the part after this like how u should subscribe to iCloudChangeEvent etc. )