Just found a recipe for a cake that has soured cream in it which I've never used before! I was hoping someone might know how long I can keep it for and does it need to be refrigerated once cooked?

Did it mean Sour Cream? Sour Cream you can buy in the dairy section, usually next to the cottage cheese.

if its truly "soured" cream, then would have to see the recipe to figure that one out.

HTH!

Some people do not have access to a variety of dairy products.

"soured cream" is the homemade version of ordinary commercial sour cream. [just like "soured milk" is a homemade version of ordinary commercial buttermilk]