I took the SSAT in November but got a 74th percentile, the math messed me up, and I am planning to take it on one of these dates
January 5,6,7,12,13,14,15,19,21,22,30.
Is it alright to submit these scores later than the application deadline? I would only have little time to study so I am worried. Please let me know.
Check with the school to which you are applying. Start with the website. Email the admissions office if you can’t find the info on the website. Many schools accept test results after the application deadline.
Or…trust random strangers on an anonymous forum. 
Is entirely dependent on the school. Check their policies.