They come to adore.
Has the Pope come and bowed down to it? Do all the Popes come and bow down to it?
I have no idea, there have been quite a few popes since this has happened. I imagine that surely a few of them have come to adore. Catholics adore Christ's presence in the Eucharist as they would coming face to face with his humanity, for His presence in the Eucharist is Body, Blood, Soul and Divinity.
Will there be any consequences for bowing down to it and praying to it if it is not JESUS CHRIST?
It is so it is not an issue.
What about the excess Host that Roman Catholic's come and pray to now? If it isn't transubstantiated they are praying to bread. Isn't this idolatry?
If a person knowingly worships and adores a host that has not been consecrated, it would be idolatry. However given the bad behavior of so many Catholics who do not come to adore Christ in the Most Blessed Sacrament, when they say they believe it to be true, I do not believe that your former statement ever really occurs.