What can help clear Pipes PLUMBING

The bathroom when the sink faucet is on the water is draining up into the bathtub, The Toilet bowl is full of water not flushing the water is not draining it's staying there I can't flush the toilet 🚽 it's full of water. The Bathtub is full of water and I can't use the Shower & Bathtub, sink faucet; toilet it's all pipes

Advice how to fix