My 1 year old female cat fully potty trained but she keeps peeing on the sofa and the floors. She also keeps crying all day and night. She is shedding fur in patches. She rolls around when you go near her.

Take her to the vet!

It could be any one of a number of things.

First thing that jumps into my head is a urinary tract inection.
Best to get her to the vet to rule that out as they can be very painful.
The hair loss is also a worry and could indicate fleas or skin irritation.

Has anything changed around your house?
Been going out for longer? New pets?

The hair loss could also be stress related and the urinating out of spite for the changed circumstances.