Go to the Office of Disability Services at the college you attended (or the one closest to you). Ask for names of professionals who evaluate and work with adults.
You present a very complex problem. The brief responses that I can offer here would not be of help. If you have not done so yet, seek professional help from a mental health professional.
I believe that if a student has dyslexia and has received test accommodations in the past, it is appropriate for the placement test to provide comparable accommodations.
Schools should not require special education eligibility as an absolute prerequisite to present accommodations, though the presence of recent and historical accommodations, whether through an IEP o
Organization and Executive Function difficulties can be caused by a Learning Disability, by ADHD, or by both. It is important to clarify which is the problem.
Most colleges and universities in the United States have some type of services available to students with special needs. New college students should be encouraged to seek out these services.