Difficulty doing #2. Have to go often, comes out soft/watery, always strain & the rim is always irritated & painful from wiping so much. What is it?

Long list. Need exam. Many conditions can cause frequent stools. Other conditions can cause local irritation at the anus that then makes it difficult and painful to pass stool. You will need an evaluation, preferably by a gastroenterologist or a colon and rectal surgeon, to have a definitive answer.