SAT Help Suggestions

This is a question from a friend. “I have only one shot at taking the SAT this January on the 23rd. I can’t take the one in December because it’s the first day of my free SAT prep that my school is providing. I don’t know how reliable it will be but I took an SAT myself and I scored 1730. How can I prepare for the SAT and get a score above 2000 is my parents cannot afford to send me to quality SAT prep before the year ends?”