Is there a guest mode where they don’t have to create an account for purchasing?

When user click on "Checkout" button it redirects to login page. Is there a guest mode where they don’t have to create an account for purchasing? (so that for now, without login a user can purchase any item )

Yes this feature is available in nopCommerce

Go to Admin section >   Configuration   >   Global Settings  

In the 1st Tab "General"

Mark the checkbox that says " Anonymous checkout allowed:"

and SAVE the setting.

Now anyone (guests) can checkout without going through the registration process.

Thank you. My problem is solved.