The main point of creation is to make gods, as many as possible; living as a loving Heavenly family, and sharing the end-less work of creation.
The lesson of Christ's incarnation is that we Men are gods in our nature (albeit immature and flawed gods), and that God (the Father: prime creator) is a Man. So there is a continuum between mortal Men on the one hand; and creator gods such as the Father (who was the one prime creator) and the Son (Jesus Christ).
The Father is unique as prime creator, including being Father-creator of Men (including Jesus); and Jesus is the creator of this world (but not of the Men in it - as told and implied in the opening of the Fourth Gospel) - so creation is not restricted to the Father; creation has been done by both to Father and Son (at least).
Jesus tells us (clearly, explicitly, repeatedly in the Fourth Gospel) that if we know Jesus, then we know the Father; they are not the same person (else why would Jesus pray to the Father, defer to the Father, distinguish between himself and the father); but they are the same in nature: they are 'one' in love and motivation. And Jesus is a Man in his nature, therefore so is the Father.
Jesus is the Son of God, and tells us that we too can be Sons of God - we can be of the same kind as Jesus, and Jesus is of the same kind as God.
All this is perfectly clear and explicit in scripture; but it is obscured by the false (and wrongly-motivated) mania that Christianity 'must be' a monotheism. Yet it's a terrible and destructive error to try and argue that Christianity is a monotheism; because in a vital sense Christianity is an ultimate form of polytheism - maximum polytheism; (to repeat) that is the main point and purpose of Christianity.
Few, very few, errors have damaged Christianity as much as the attempt to insist that it is a monotheism: this was and is a primary error with often lethal and unavoidable consequences. It blocks understanding of the main purpose of mortal life. It puts an evasion at the heart of Christian theology. It institutionalises incoherence.
We need to be clear: the Father hopes for as many as possible of us Men to become gods and creators, like Jesus. That is what creation is for. There is only one God (capital g), one prime creator (albeit God may actually, factually, be - as I believe - a dyad of primary Father and Mother); but the plan is for there to be many gods (small g), many creators.
That's the main point of it-all.