It seems like there might be a misunderstanding or a play on words in your question. “Bet” can mean to make a wager, but it can also mean to challenge someone to do something.
If you are asking whether Kamala Harris, who is the Vice President of the United States, can make a wager with Donald Trump, who was the 45th President of the United States, the answer would depend on the context and the specific rules of the wager. Both are public figures, and such a bet, if made, would likely be symbolic or charitable in nature, rather than a personal or financial wager.
If, on the other hand, you are asking whether Vice President Harris can challenge former President Trump to a debate or some sort of competition, this is also possible in principle. However, such a challenge would be a highly unusual and politically charged event, and it would depend on the willingness of both parties to participate and the context in which the challenge was made.
It’s important to note that any interaction between these two individuals would be scrutinized by the media and the public, given their prominent roles in American politics.