Will God forgive me in Hell so I can go to Heaven?

No, you have all your chances in this lifetime. God makes it clear that after you die the first time you will be judged righteous (with Jesus Christ) or wicked (without Jesus Christ). If you are found wicked you will be sentenced to the Lake of Fire an eternity of burning torment.

Heb 9:27 (KJV): And as it is appointed unto men once to die, but after this the judgment:

Rev 20:14 (KJV): And death and hell were cast into the lake of fire. This is the second death.

Heb 2:3 (KJV): How shall we escape, if we neglect so great salvation; which at the first began to be spoken by the Lord, and was confirmed unto us by them that heard him;