Is there a Bitcoin exchange that accepts paypal and no registration needed? I am looking for a Bitcoin exchange that allows me to input a wallet address and my paypal information and it will let me send x amount of btc to that address while paying with paypal in USD, RUB, EUR, etc. 

Also, I don't want to create an account with the site and I want the site to be trusted.
What you are asking is economically impossible. Such an exchange doesn't exist or they are some sort of scams.

Paypal has very high fraud transaction rate due to high availability to obtain stolen PayPal credentials or stolen credit card numbers from darknet markets. Thus, exchanges allowing PayPal force strict Know-Your-Customer requirement on their users. It would be terrible, terrible, business decision to build such an exchange.