Your question is multifaceted. Which makes answering it complex.
Can a human, meaning a person who possesses a biological machine called the human body inherit the kingdom of God? The answer is no. A human in a human body cannot inherit the kingdom of God permanently. It can be received in the flesh but not permanently inherited. A supernatural body with supernatural(/heavenly) properties must engulf it.
“Being asked by the Pharisees when the kingdom of God would come, he answered them, “The kingdom of God is not coming in ways that can be observed, nor will they say, ‘Look, here it is!’ or ‘There!’ for behold, the kingdom of God is in the midst of you.””
The kingdom was already in their midst and they were unable to see it.
But supposing you are referring in 1 Cor 15:50 to the geographic location of the kingdom as it is best understood “in heaven” can humans in the human body enter into heaven (specifically the second heaven or even the third heaven)? Yes, but not permanently
“And no man hath ascended up to heaven, but he that came down from heaven, even the Son of man which is in heaven.”
Here we see Jesus being present in two places at the same time. In the body He was in front of Nicodemus but in the spirit He was in heaven.
This is not a new phenomenon in fact it is widely observed in the OT by prophets. Their speech was not merely figurative it was descriptive. Here is one such example
“And Elijah said, “As the Lord of hosts lives, before whom I stand, I will surely show myself to him today.””
1 Kings 18:15
Elijah was both in front of Obadiah and before God in the divine counsel in the second heaven. In fact a prophet who heard from God was required to HEAR or see from God to be a true prophet and Jesus was such said prophet.
“For who among them (false prophets who spoke out of their own imagination) has stood in the council of the Lord to see and to hear his word, or who has paid attention to his word and listened?”
Did Jesus’ body prior to resurrection allow Him to have inherited the kingdom with that body? The answer is no
Why? Because He was given a human body and human bodies bleed. Heavenly bodies do not bleed. The life of a heavenly being is not in their blood as is the case to earthly bodies. Which means that Adam was not created immortal, hence the tree of Life.
Jesus in the human housing bled
“But one of the soldiers pierced his side with a spear, and at once there came out blood and water.”
Jesus mentions nothing about blood
“See my hands and my feet, that it is I myself. Touch me, and see. For a spirit does not have flesh and bones as you see that I have.””
Now spirits are different from heavenly beings, spirits can be bodiless, but heavenly beings cannot be spiritless. And heavenly beings were created immortal but can lose their immortality
“I said, “You are gods, sons of the Most High, all of you; nevertheless, like men you shall die, and fall like any prince.””
Granted Jesus’ body was not allowed to decompose but it doesn’t negate the possibility that it could have
“So is it with the resurrection of the dead. What is sown is perishable; what is raised is imperishable.”
1 Corinthians 15:42
“For you will not abandon my soul to Sheol, or let your holy one see corruption/decay.”
No Jesus could not have inherited the kingdom whilst continuing to inhabit the perishable human biological machine called the human body. The human body, including the one Jesus received to take on (Heb10:5), had to put on the immortal and imperishable heavenly body, either after death or for those who will still be alive morphing whilst still alive in the body at the coming of the Lord.
“For this perishable body must put on the imperishable, and this mortal body must put on immortality.”
1 Corinthians 15:53
This evidently means that Jesus is no longer a human. And nor will we be, for we will be like the heavenly beings in heaven