Scholarships for Sophomore Transfer Students

So recently I just got accepted into my dream school. (USC)
Unfortunately they are giving me ZERO financial aid and its quite expensive
Are there any scholarships available for sophomore transfer and when should I start applying for them?
How much do you think I can get in scholarships if I apply to A LOT of them?
Thank you so much!
I am very committed to going to this school and really don’t want my parents to suffer this financial burden.

It’s likely too late for this coming year. What is your parents’ AGI? How much can they pay?

They would have offered those sophomore scholarships. The only way to attend there is for your parents to “suffer this financial burden”. Are they prepared to do that?

Right. Unfortunately I applied for financial aid two months late.
I’ll try to appeal.
Thank you for your help guys!