This code adds a shortcode that displays the header section of the Ultimate Member profile.

um_profile_header_shortcode.php

<?php

/**
 * Shortcode that displays the profile header.
 * Example: [um_profile_header form_id="7" user_id="1"]
 *
 * @global \wpdb $wpdb
 *
 * @param array $atts Shortcode attributes:
 * - (int) form_id - profile form ID. The first profile form if blank.
 * - (int) user_id - user ID. The current page/post author if blank.
 *
 * @return string The profile header HTML.
 */
function um_profile_header_shortcode( $atts ) {
	$args = shortcode_atts(
		array(
			'form_id' => 0,
			'user_id' => 0,
		),
		$atts
	);

	global $wpdb;
	if ( empty( $args['form_id'] ) ) {
		$args['form_id'] = (int) $wpdb->get_var(
			"SELECT pm.post_id
			FROM {$wpdb->postmeta} pm
			WHERE pm.meta_key = '_um_mode'
				AND pm.meta_value = 'profile'
			LIMIT 1;"
		);
	}
	if ( empty( $args['user_id'] ) ) {
		$args['user_id'] = is_singular() ? get_the_author_meta( 'ID' ) : um_profile_id();
	}
	if ( empty( $args['form_id'] ) || empty( $args['user_id'] ) ) {
		return;
	}

	$post_data = UM()->query()->post_data( $args['form_id'] );
	if ( is_array( $post_data ) ) {
		$args = array_merge( $args, $post_data );
	}

	$args = apply_filters( 'um_pre_args_setup', $args );
	$args = apply_filters( 'um_shortcode_args_filter', $args );

	if ( ! um_get_requested_user() ) {
		um_set_requested_user( $args['user_id'] );
		um_fetch_user( $args['user_id'] );
	}

	ob_start();
	?>
	<div class="um um-profile um-viewing <?php echo esc_attr( 'um-' . $args['form_id'] ); ?> um-profile-header-shortcode">
		<div class="um-form" data-mode="profile">
			<?php
			do_action( 'um_profile_header_cover_area', $args );
			do_action( 'um_profile_header', $args );
			do_action( 'um_profile_navbar', $args );
			?>
		</div>
	</div>
	<?php
	UM()->shortcodes()->dynamic_css( $args );
	$content = ob_get_clean();

	if ( um_get_requested_user() ) {
		um_reset_user();
	}

	return $content;
}
add_shortcode( 'um_profile_header', 'um_profile_header_shortcode' );

@yuriinalivaiko could you explain to me why I get no_cover class for the user's post while the user has submitted their profile cover?

See here the post: https://snipboard.io/P06SCI.jpg
See here the profile: https://snipboard.io/P06SCI.jpg

Edit: when I add a specific from ID it is showing. I think it's depending on this.

@demian1985
Maybe you have multiple profile forms with different settings. The shortcode gets settings from the first fount profile form if there is no form_id attribute.