If you bought a pair of wayfarers from goodwill but instead having wayfarer hand made in Italy on the inside it has B and L ray-ban usa have lens is fake?

Not necessarily. Many pairs of Wayfarer sunglasses produced by Ray-Ban in the 1980s and 1990s featured the "B and L Ray-Ban USA" marking on the inside of the temples. This was due to a licensing agreement between Ray-Ban and Bausch & Lomb, which produced the sunglasses at the time.

To verify the authenticity of your sunglasses, you can look for other indicators of genuineness, such as the Ray-Ban logo etched on the lenses and the "RB" mark on the nose bridge. You can also compare your sunglasses to images of authentic Wayfarers online to ensure that the design and details match.