Hello I'm from Venezuela, I would also like to know how common is Bitcoin in Peru, I have this country as a destination in the future
To my knowledge (limited!), Bitcoin is not popular in Peru. In Peru you can use US$ in many places (big grocery stores, etc.), anywhere they have computer-based cashiers.
Peru has many Venezuelans who have immigrated there because of V's problems. Peru is poor, always has been, but it is more free and the economy is now better than Venezuela's.
Just for everyone's info,
Peru is without doubt one of the most interesting countries in the world to visit. There are amazing natural wonders found there.