Practically none: the sun is fusing vast quantities of hydrogen into helium every second, and you wouldn't measure it in gallons, any self-respecting scientist would use a metric system and talk of tonnes.
The sun consumes about 7 x 10^8 tonnes of hydrogen per second.
150 000 American gallons flow over every second.
I don't know if this is the exact answer to your question, but Americans use about 385 million gallons of gasoline every day.
150,000 gallons
Annually Americans consume 8.6 gallons of bottled water
At the moment about 24% but it is increasing every second.
3160 tons every second
In the Sun, approximately 600 million tons of hydrogen are converted into helium every second through the process of nuclear fusion. This fusion occurs in the core of the Sun, where extreme temperatures and pressures enable hydrogen nuclei to combine and form helium, releasing vast amounts of energy in the process. This energy is what powers the Sun and provides light and heat to our solar system.
a dishwasher uses about a gallon every wash
a second
the core of the sun is a seething nuclear furnace where millions of tons of hydrogen are being fused in to helium every second.
You should consume water every day.
Well, I'm so glad you're curious about this fascinating process in our universe! You see, every second, millions and millions of atoms of hydrogen come together to fuse into helium, creating beautiful energy and light that shines across the vastness of space. It's just one of those magical things that reminds us of the wondrous harmony and balance all around us.