does Jupiter have a solid surface?

no, it does not have a solid surface

What number planet is it in terms of proximity to the sun?

Jupiter is the 5th planet.
NASA | Rattling Jet Stream on Jupiter

Does Jupiter have moons?

Yes,it has 63 of them.

What was the first planet to form?

Actually, Jupiter was the first planet to form, besides the sun.

What planet is the biggest?

Jupiter is the biggest planet to ever form.

What is this planet remembered for?

This planet is remembered fr the red spot.