What do polytheists believe about the number of god's that exist

Polytheism - General Overview
Polytheism is the belief in and worship of many gods. Typically, these gods are distinguished by particular functions, and often take on human characteristics. This was particularly true in ancient Greece and Rome. In other polytheistic cultures such as ancient Egypt, gods take on the form and characteristics of objects found in nature, including trees, sacred herbs, cattle, animals and animal--human hybrids.