Bobulinski has stated that Joe Biden was well aware of his son's business dealings (contrary to Biden's prior public statements) and affirms that "the big guy" refers to Joe Biden when talking about payment from foreign governments. He's handed over to the FBI hundreds of emails, documents, texts, some audio recordings, etc.
Right, as said no evidence.
If personal testimony and access to private emails and documents from a non-partisan actor is not evidence, what is?