Hi jubbly10
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 We cannot tell you how long a MR takes as it depends on a number of factors such as what region you live in. Prior to Covid it took about 8 weeks but there were variations.
On the forum we hear members saying theirs only took a couple of weeks, while other members saying it took many months.
Sorry but if I gave you a time frame it would only be a guess.
Gary