There are websites that allow users to stream Pay-Per-View boxing fights at no charge. However, streaming online sporting events without a license to do so is considered piracy and is illegal.
There are websites that ignore these laws and stream PPV events anyway. Some of the websites may be based overseas where it is harder or impossible for U.S. federal laws to be enforced. Visiting these websites comes with a risk, while actually hosting a PPV streaming website comes with even greater risk. Additionally, commercial bars or restaurants need to be licensed in order to broadcast a PPV event to their customers.