I was married to a girl whom I did not wanted to be my wife, I have not made intercourse with her, kindly advice, my nikah is still intact or not.

If a person does not have intercourse with his wife, that does not effect
the marriage. The marriage is valid.

However, it is abnormal for the husband and wife not to be intimate for such
a long period. Both spouses have many obligations to one another. We advise
this abnormal relationship be addressed with the intention of amicably
restoring a normal relationship.

and Allah Ta'ala Knows Best

Mufti Ebrahim Desai