Scripts and Styles are not enqueuing in functions.php

Solution:

Make sure you give unique handle to all wp_enqueue_script and wp_enqueue_style. the first parameter is the handle. you can also remove js based on the handle using wp_dequeue_script. try below code.

function Twenty_twenty_scripts() { 
    wp_enqueue_script( 'twentytwenty_script',        get_theme_file_uri(), array(), '1.0'); 
    wp_enqueue_script( 'twentytwenty-priority-menu', get_theme_file_uri( '/js/custom- scroll/jquery.mCustomScrollbar.concat.min.js' ), array(), '20181214', true );
    wp_enqueue_script( 'bootstrap',                  get_theme_file_uri( '/js/bootstrap.js' ), array(), '20181231', true );
    wp_enqueue_script( 'bootstrap-min',              get_theme_file_uri( '/js/bootstrap.min.js' ),  array(), '20181214', true );
    wp_enqueue_script( 'carousel',                   get_theme_file_uri( '/js/carousel.js' ),  array(), '20181214', true );
    wp_enqueue_script( 'carousel-product',           get_theme_file_uri( '/js/carousel-product.js' ),  array(), '20181214', true );
    wp_enqueue_script( 'checkout',                   get_theme_file_uri( '/js/checkout.js' ),  array(), '20181214', true );
    wp_enqueue_script( 'color-calculations',         get_theme_file_uri( '/js/color-calculations.js'  ), array(), '20181214', true );
    wp_enqueue_script( 'core',                       get_theme_file_uri( '/js/core.js' ), array(),  '20181214', true );
    wp_enqueue_script( 'customize',                  get_theme_file_uri( '/js/customize.js' ),  array(), '20181214', true );
    wp_enqueue_script( 'customize-controls',         get_theme_file_uri( '/js/customize-controls.js' ), array(), '20181214', true );
    wp_enqueue_script( 'customize-preview',          get_theme_file_uri( '/js/customize-preview.js' ), array(), '20181214', true );
    wp_enqueue_script( 'editor-script-block',        get_theme_file_uri( '/js/editor-script-block.js' ), array(), '20181214', true );
    wp_enqueue_script( 'index',                      get_theme_file_uri( '/js/index.js' ), array(), '20181214', true );
    wp_enqueue_script( 'touchSwipe',                 get_theme_file_uri( '/js/jquery.touchSwipe.min.js' ), array(), '20181214', true );
    wp_enqueue_script( 'touch- punch',               get_theme_file_uri( '/js/jquery.ui.touch-punch.js' ), array(), '20181214', true );
    wp_enqueue_script( 'jquery-latest',              get_theme_file_uri( '/js/jquery-latest.min.js' ), array(), '20181214', true );
    wp_enqueue_script( 'jquery-ui',                  get_theme_file_uri( '/js/jquery-ui-1.11.4.js' ), array(), '20181214', true );
    wp_enqueue_script( 'masonry',                    get_theme_file_uri( '/js/masonry.pkgd.min.js' ), array(), '20181214', true );
    wp_enqueue_script( 'npm',                        get_theme_file_uri( '/js/npm.js' ), array(), '20181214', true );
    wp_enqueue_script( 'skip-link-focus-fix',        get_theme_file_uri( '/js/skip-link-focus-fix.js' ), array(), '20181214', true );
    wp_enqueue_script( 'store',                      get_theme_file_uri( '/js/store.js' ), array(), '20181214', true );
}
add_action( 'wp_enqueue_scripts', 'Twenty_twenty_scripts' );