For each college, go to its financial aid web page. Look for:
a. Whether non-custodial parent information is required.
b. Its net price calculator to estimate financial aid.
More information that you should read: http://talk.qa.collegeconfidential.com/financial-aid-scholarships/2083835-faq-divorced-parents-financial-aid-and-net-price-calculators.html
For automatic merit scholarships not dependent on parental finances, see: http://talk.qa.collegeconfidential.com/discussion/comment/21089443/#Comment_21089443 (but verify on college web sites in case of changes)
If you have National Merit, see: http://nmfscholarships.yolasite.com/ (but verify on college web sites in case of changes)