Q.Peach tree has two shoots. Do I remove one?
When we bought the peach tree we noticed a young shoot appearing from the soil. Now it is big and also seems like a peach tree. Thing is it looks like it is not attached to the main stem. Should I remove it?

I would normally recommend removing the secondary, younger stem, because a sucker from below the graft may not be true to the intended variety of fruit, and it may dominate and suppress the primary stem and fruiting canopy.
But from the photo, it appears to be an unusual structural origin of the younger secondary leader, as if that was the grafted scion and the primary leader originates from lower down on the root stock.
So I'm not sure, I hate to tell you to cut it out and then have you find out that the remaining tree is not the intended variety.
Can you question the grower or nursery where you bought it, for help in determining what exactly is going on?