If the sun burns Hydrogen, shouldn't the sun be full of water? (burned hydrogen=water!)

The Sun does not "burn." It gets its energy from a thermonuclear fusion reaction, not fire. This produces helium as a byproduct, not water.

it would instantly evaporate d/t the heat and be recycled

You clearly: took chemistry and failed/ didn't do any of the math to back this question up

This question makes it obvious why, after more than 4 years, you are only at level 2 on the Y!A points scale, and down 17 points for the week so far. Wow!

Are you having a good time?
I'm not going to play anymore.

Although there is some oxygen in the Sun, oxidation (what we call fire, burning or combustion) as on Earth is not possible. When any molecules form, the atoms are too energetic to remain covalently connected as in oxidation here on Earth.

The energy of the Sun comes from nuclear fusion in which hydrogen atoms combine to form helium and in the process release a tremendous amount of energy. Oddly, there is not enough pressure in the Sun to cause the fusion directly. If there were, most of the fusion would occur fairly rapidly as it does in more massive stars, instead of over the billions of years of our Sun's "main sequence".

The fusion in the Sun occurs because of a rare effect called "quantum tunneling". In this process, fusion takes several separate steps to form helium and release energy. During the process of making a helium atom, about 0.7% of the original hydrogen is converted from matter to energy.

In the Sun, even though quantum tunneling occurs extremely rarely to atoms, there are so many atoms that more than four million metric tons of hydrogen is converted to energy each second. Even at this rate, over the Sun's 4.57 billion year existence, only around 100 Earth-masses of matter have been converted into energy leaving about 332,900 Earth-masses remaining.