Scientology focus its belief in psychological technologies of people. It also include belief in God but there is no specific details or doctrines about God.
You can read more about it at the source.

Scientology states that its "Church has no dogma concerning God." In fact, 98% of the Scientology Creed (1954) talks about their belief in man:

We of the Church believe:
That all men of whatever race, color or creed were created with equal rights;
That all men have inalienable rights to their own religious practices and their performance;
That all men have inalienable rights to their own lives;
That all men have inalienable rights to their sanity;
That all men have inalienable rights to their own defense;
That all men have inalienable rights to conceive, choose, assist or support their own organizations, churches and governments;
That all men have inalienable rights to think freely, to talk freely, to write freely their own opinions and to counter or utter or write upon the opinions of others;
That all men have inalienable rights to the creation of their own kind;
That the souls of men have the rights of men;
That the study of the mind and the healing of mentally caused ills should not be alienated from religion or condoned in nonreligious fields;
And that no agency less than God has the power to suspend or set aside these rights, overtly or covertly.

And we of the Church believe:
That man is basically good;
That he is seeking to survive;
That his survival depends upon himself and upon his fellows and his attainment of brotherhood with the universe.

And we of the Church believe that the laws of God forbid man:
To destroy his own kind;
To destroy the sanity of another;
To destroy or enslave another’s soul;
To destroy or reduce the survival of one’s companions or one’s group.
And we of the Church believe that the spirit can be saved and that the spirit alone may save or heal the body.

http://www.whatisscientology.org/html/part14/chp40/pg0728.html

98% of the Nicene Creed (from the year 325) of the Catholic Church talks about our belief in God:

We believe in one God, the Father, the Almighty, maker of heaven and earth, of all that is seen and unseen.

We believe in one Lord, Jesus Christ, the only Son of God, eternally begotten of the Father, God from God, Light from Light, true God from true God, begotten, not made, one in being with the Father. Through Him all things were made. For us and our salvation He came down from heaven: by the power of the Holy Spirit, He was born of the Virgin Mary, and became man. For our sake He was crucified under Pontius Pilate; He suffered, died, and was buried. On the third day He rose again in fulfillment of the scriptures: He ascended into heaven and is seated at the right hand of the Father. He will come again in glory to judge the living and the dead, and his kingdom will have no end.

We believe in the Holy Spirit, the Lord, the giver of life, who proceeds from the Father and the Son. With the Father and the Son, He is worshiped and glorified. He has spoken through the Prophets. We believe in one, holy, catholic, and apostolic Church. We acknowledge one baptism for the forgiveness of sins. We look for the resurrection of the dead, and the life of the world to come. Amen.

With love in Christ.