Hi,

Please go to Appearance → Customize → Custom CSS then add the following custom CSS code:

body {
    --logo-h: 120px;
}
#navigation.header-6 #logo img {
    max-height: var(--logo-h);
}
#navigation.header-6 .pcheader-icon > a,
#navigation.header-6 .main-nav-social,
#navigation.header-6 .menu > li > a, #navigation.header-6 ul.menu > li > a {
    line-height: var(--logo-h);
}
#navigation.header-6 .pcheader-icon > a {
    height: var(--logo-h);
}
#navigation.header-6 {
    height: calc(var(--logo-h) + 2px);
}

Change 120px with the logo height you want to show.

Regards,
PenciDesign.

Hi,

Please go to Appearance > Customize > Logo & Header > Logo: change the log size at the 

- Set A Max Width for Logo,

- Set A Height for Logo Image

Regards,
PenciDesign.