function themeslug_theme_customizer( $wp_customize ) {
    $wp_customize->add_section( 'themeslug_logo_section' , array(
        'title'       => __( 'Header Logo', 'themeslug' ),
        'priority'    => 30,
        'description' => 'Upload a logo to replace the default site name and description in the header',
    ) );

    //ADD SETTINGS
    $wp_customize->add_setting( 'themeslug_logo' );
    $wp_customize->add_setting( 'themeslug_logo_footer' );

    //ADD LOGO IN HEADER
    $wp_customize->add_control( new WP_Customize_Image_Control( $wp_customize, 'themeslug_logo', array(
        'label'    => __( 'Logo', 'themeslug' ),
        'section'  => 'themeslug_logo_section',
        'settings' => 'themeslug_logo',
    ) ) );

    //ADD LOGO IN FOOTER
    $wp_customize->add_control( new WP_Customize_Image_Control( $wp_customize, 'themeslug_logo_footer', array(
        'label'    => __( 'Footer Logo', 'glide' ),
        'section'  => 'themeslug_logo_section',
        'settings' => 'themeslug_logo_footer',
    ) ) );
    
   //ADD ANY OF PAGE DROPDOWN 
        $wp_customize->add_setting('apply_page_id');

        $wp_customize->add_control(
                'apply_page_id', array(
            'type' => 'dropdown-pages',
            'label' => esc_html__('Apply Page', 'parallaxsome'),
            'description' => esc_html__('Select page for Homepage Apply Section', 'parallaxsome'),
            'section' => 'themeslug_logo_section',
            'priority' => 35
                )
        );
}
add_action( 'customize_register', 'themeslug_theme_customizer' );

//In HTML (Front) view

<img src='<?php echo esc_url(get_theme_mod('themeslug_logo_footer')); ?>'>