After the day of Qiyamat when everything will be destroyed, Hazrat ISRAFEEL (Alayhis salaam) will be ordered to blow the bugle (soor) for the second time.
Every person who has lived on this earth from the time of Hazrat ‘Adam (‘alaihis salam) up to the final day will be brought to life again.
They will all gather before The King: ALlāh Ta’ala, for Judgment in the Field of Resurrection (Maidan-e-Hashr). On this Day they will all have to give account of their deeds.
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This Day is known by various names:
Yawm-ul-Hashr (Day of Resurrection)
Yawm-ul-Hisab (Day of Reckoning or Account)
Yawm-ul-Jaza and Yawm-u-Deen (Day of Judgement)
That Day the believers will be blessed and rewarded with the Garden (Jannah) while the unbelievers will be punished in the Fire (Jahannam).
Besides the Kuffaar and Mushrikeen Allah Ta’aala will forgive whomsoever He wishes.
KUFFAAR– Plural of KAAFIR meaning one who disbelieves in Allah.
MUSHRIKEEN– Plural of MUSHRIK meaning one who associates with Allah Ta’aala any partner in His being or attributes.
Jannah (Heaven)
There are seven heavens.
Paradise (firdaws), also called “The Garden” (Janna), is a place of physical and spiritual pleasure, with lofty mansions (39:20, 29:58-59), delicious food and drink (52:22, 52:19, 38:51), and virgin companions called houris (56:17-19, 52:24-25, 76:19, 56:35-38, 37:48-49, 38:52-54, 44:51-56, 52:20-21). There are seven heavens (17:46, 23:88, 41:11, 65:12).
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There is evidence in the Qur’aan that the people of Paradise will remember the life of this world. For example, in Soorat al-Toor, Allaah tells us (interpretation of the meaning):
“And some of them draw near to others, questioning, saying: ‘Aforetime, we were afraid with out families (of the punishment of Allaah). But Allaah has been gracious to us, and has saved us from the torment of the Fire. Verily, we used to invoke Him (Alone) before. Verily, He is the Most Kind, the Most Merciful.” [al-Toor 52:25-28]
Everything that the people of Paradise desire will be theirs, as Allaah says (interpretation of the meaning): “… (there will be) therein all that one’s inner-self could desire, all that the eyes could delight in, and you will abide therein forever.” [al-Zukhruf 43:71]
READ MORE: 8 Doors Of Jannah (Paradise)
Will any humans enter it before the Day of Resurrection?
There are two aspects to this:
1. Entering it in spirit only, as is the case with the dead. This is proven in the case of the Prophets, and of the martyrs (shuhadaa’) whose souls are in the crops of green birds which roam about in Paradise. This is also known from the ahaadeeth in which the Prophet (peace and blessings of Allaah be upon him) describes how he entered Paradise in dreams, which has to do with the soul or spirit.
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2. With regard to entering Paradise in both body and soul, this will happen on the Day of Resurrection for both humans and jinn. The only exception to this is Adam (peace be upon him) who was in Paradise before he came down to this earth, as was mentioned by Ibn al-Qayyim and others. And Allaah knows best

All Prophets (PBUT) and 10 Sahaabahs are already guaranteed Heaven.
Jahannam (Hell)
There are seven hells.
It has seven doors (Qur’an 39:71; 15:43) leading to a fiery crater of various levels, the lowest of which contains the tree Zaqqum and a cauldron of boiling pitch. The level of hell depends on the degree of offenses. Suffering is both physical and spiritual.
READ MORE: What is jahannam In Islam?
Being a Muslim does not keep one out of Hell, but it is not clear whether Muslims remain in Hell forever. Non-Muslims (kafir), however, will be punished eternally. A Muslim author on IslamOnline.net explains it this way:
“Ultimately, God will remove from Hell those believers whose sins were not forgiven nor atoned for by good deeds in their lifetimes, and they will then enter Paradise. The remaining inhabitants of Hell will stay there eternally.” (Islam Online)