sending sat scores?

hi all, I’m not really sure how sending sat scores works. I have college applications due on January 1st, and today is December 27th. Can I just send my scores regularly now and all is well or should I be worried that ‘they won’t get there in time’? I’m a little confused about what I should do. Does it really take weeks to get there? Will rushing my scores do anything? I’m really lost. Thanks!