Chapter 3
Section:

(1) A transgender person shall have a right to be recognised as such, in accordance
with the provisions of this Act.
(2) A person recognised as transgender under sub-section (1) shall have a right to
self-perceived gender identity.

Self Perceived means we choose the identity ourselves nobody else can choose for us

A transgender person may make an application to the District Magistrate for issuing
a certificate of identity as a transgender person, in such form and manner, and accompanied
with such documents, as may be prescribed:
Provided that in the case of a minor child, such application shall be made by a parent
or guardian of such child.
(1) The District Magistrate shall issue to the applicant under section 5, a certificate
of identity as transgender person after following such procedure and in such form and
manner, within such time, as may be prescribed indicating the gender of such person as
transgender.
(2) The gender of transgender person shall be recorded in all official documents in
accordance with certificate issued under sub-section (1).
(3) A certificate issued to a person under sub-section (1) shall confer rights and be a
proof of recognition of his identity as a transgender person.
(1) After the issue of a certificate under sub-section (1) of section 6, if a transgender
person undergoes surgery to change gender either as a male or female, such person may
make an application, along with a certificate issued to that effect by the Medical Superintendent
or Chief Medical Officer of the medical institution in which that person has undergone
surgery, to the District Magistrate for revised certificate, in such form and manner as may be
prescribed.
(2) The District Magistrate shall, on receipt of an application along with the certificate
issued by the Medical Superintendent or Chief Medical Officer, and on being satisfied with
the correctness of such certificate, issue a certificate indicating change in gender in such
form and manner and within such time, as may be prescribed.
(3) The person who has been issued a certificate of identity under section 6 or a
revised certificate under sub-section (2) shall be entitled to change the first name in the birth
certificate and all other official documents relating to the identity of such person:
Provided that such change in gender and the issue of revised certificate under
sub-section (2) shall not affect the rights and entitlements of such person under this Act.

Section 7 of the same act says something completely different it mentions after undergoing surgery

What do you think is one section contradicting the other section ?
If it is contradicting which section will be given priority?

As per me the interpretation of the Supreme Court before the act comes into existence should be taken where the SC recognises that the ID should be issued on Self-perceived identity.
Section 4 because it is mentioned before section 7 so section 4 should be considered and read along with section 7, but section 4 is the main thing