admittance
ad·mit·tance
/ədˈmıtn̩s/ noun [ noncount ]
formal : permission to enter a place or to become a member of a club, group, etc. : permission to be admitted : admission
gain admittance
He tried to enter the restaurant but was refused admittance.
They opposed the admittance of women into the club.
The sign said “No Admittance.”