Hello @rudnei
Please add this CSS in Additional CSS.
CSS To hide exiting label
.menu-label{
display: none;
}
CSS to add topbar menu label
.menu-toggle::after {
content: "top";
padding-left: 5px;
}
CSS to add primary menu label
#primary-menu-wrapper .menu-toggle::after {
content: "Main";
padding-left: 5px;
}
Please go to Admin panel >> Appearance >> Customize >> Additional CSS, add all of above css here and published
Have a good day
Regards,
Psink