Why do you think there is a problem? Have you cycled the bolt? Have you fired the rifle?
That bolt doesn't look bad from what I can see in the photos. Get the users manual out, follow the instructions for cleaning and oiling the bolt and reinstall it in your rifle. With the rifle empty, work the bolt 50 - 100 times ( Don't Pull the trigger - DO NOT DRY FIRE YOUR RIMFIRE RIFLE) or so then pull it back out and wipe it down and lightly oil it and reinstall.
Also, if you have not done so already, carefully inspect your rifle, oil and clean it including running several oiled patches throught the barrel followed with a dry patch or two to remove any excess oil.
Go shoot it and enjoy your new rifle.
Is this your first rifle or are you well experienced with firearms in general? Knowing your experience level will help folks help you.