Here’s how to approach colleges if you’re seeking access to services: https://insights.collegeconfidential.com/learning-difference
Schools receiving federal monies provide money to accommodate disabilities. Find the definition of disabilities under special education in the department of education or civil rights in the reading room and then online under Section 504 or the ADA. It differs very significantly from eligibilities in special education.
Learning differences is a polite, sweet term now, but has no connection to accommodations. Everyone now, in the past or in the future has learning differences.
A really quick, early way to find out how to access accommodations is to access accommodations is to look up accommodations on the ACT or SAT websites. That will give you a starting point in learning about the definition of disabilities and documentation requirements. This information can get you started on on identification of a legal disability.