Hi R
Welcome to the forum.
You might want to have a look at the following FAQ which explains where everything is;
www.benefitsandwork.co.uk/guides-for-claimants/faq/forum You not told us which assessment you are talking about, so I will take a guess.
If you have had a PIP assessment over the phone the you need to contact PIP helpline after 48 hours and ask for a copy of the assessors report called PA4, if you had a paper based assessment then you need to ask for a PA3.
If you had a WCA assessment then you need to wait until you get a decision and then contact UC helpline and ask for a copy of the assessors report called a UC85.
Gary