You can use the Tools > Import Wii Save feature in Dolphin to select the downloaded data.bin file.
To use a downloaded save file on a physical Wii console, you will need an and a way to transfer files from your PC to the SD card (like a card reader). spider man shattered dimensions wii save data
You must play the game at least once on the target Wii to create an initial save entry before you can overwrite it. You can use the Tools > Import Wii
Since the game is older, official hosting sites are rare. The most reliable sources for Wii save files are: spider man shattered dimensions wii save data