If you have a GP in the UK, you can ask for a referral to the services in your area. In some cases, you can refer yourself. They offer different services to support you.
You can also check for other services:
Here you can find different help lines that you can call for free in the UK
Career and Jobseeker Links
Here are two links to tips from Autism Speaks and Achieving True Self that can guide you in creating an action plan for finding an appropriate job.
At this link, you can find an article from Workology that lists companies hiring people with autism. If you are unsure what you would like to do, and what your purpose and inspirations are, please check the different career assessments that may give you an idea of your path. In my case, I have followed many paths. I have dyslexia, which makes things diverse and fun. Free Career Aptitude and Career Assessment Tests: The Balance.