It sounds like you are stuck on the loading screen, or you are looking for the correct way to manually link or repair your game data.
Launch the game, let it finish the data preparation, then change the language back to your preference from the .
Navigate to your installation drive (usually C:) and find: C:\ProgramData\Blizzard Entertainment\StarCraft II Delete the contents of this folder (requires Hidden Items to be visible in View settings).
Here is the proper text version, depending on the exact meaning: