When I run my washing machine my toilet over flows and my bath tub has at least 10 inches of water in it. Why does it do that? Please help so I don't have to spend money for a plumber to come to my house

If you have a septic tank, it might be full & require pumping out by a sewer /plumbing company. If you are on municipal sewage, the most likely culprit is a clogged or obstructed main drain line. Rent a power snake & run it through the washing machine drain down through the drain line. This is what a plumber would do & charge you for it.