You don't force him to evolve; you wait until he reaches about level 25 or higher, and he should automatically evolve.
geodude evolves at lvl 25.
No.
no
What you have encountered is a shiny Geodude, which, as you described, is gold and a normal Geodude is a light gray color. Think of shiny Geodude as a gold nugget and a normal Geodude has a regular rock.
it doesnt evlove by level. you need to trade it and it will evlove for them, then they trade it back.
Geodude will evolve into Graveler.
No, Geodude is not a real creature. Geodude is a fictional character only in the Pokemon franchise.
A gold geodude is just a shiny geodude you must keep finding geodude in granite cave until its shiny.
yes
he dosent
36
No it doesn't