Dear Manahel.fatima
There are seven skies and the first one is the one we see, and the others are above it . And there are seven earths and the one we live on is the first and the rest are under it.
Quran 65:12 which means:
God it is Who created seven heavens, and of earth the like thereof, that is to say, seven earths. The command, the revelation, descends between them, between the heavens and the earth: Gabriel descends with it from the seventh heaven to the seventh earth, that you may know (li-ta‘lamū is semantically connected to an omitted clause, that is to say, ‘He apprises you of this creation and this sending down [that you may know]’), that God has power over all things and that God encompasses all things in knowledge.
At the day of Judgment Allah will make the earth flat no mountains and no valleys, and when crossing the bridge (Sirat) some people will fall to Hell-fire underneath it and the ones who cross it will go to heaven at the other end.
Allah Created everything before creating Adam the first human and Prophet of Allah.
I did not understand your last question, would you like to ask it in a clear way to enable us to answer it.
Salam