We have no hot water throughout the house after replacing the kitchen faucet. All I did was turn off the water in my mobile home & bleed off the water from the bathroom faucet a couple of minutes before unhooking the kitchen water lines.

All I did was turn off the water

Presumably you turned the water back on.
What does the valve that you used to turn the water on and off look like?

Is your cold water vo,ume and pressure as good as ever throughout the home?