Thank you so much!
I made it work with just getting them from $cases array.
<?php
$cases = get_field('forside_cases');
if( $cases ): ?>
<div class="cases-section">
<h2><?php echo $cases['cases_overskrift']; ?></h2>
<div class="container">
<div class="case-text col col--xs-12 col--sm-12 col--md-6 col--lg-6">
<p class="title"><?php echo $cases['case_virksomhedsnavn']; ?></p>
<p class="text"><?php echo $cases['case_tekst']; ?></p>
<?php
$active_services = $cases['aktive_ydelser'];
if( $active_services ):
?>
<p>Samarbejdet indeholder bla.</p>
<ul>
<?php foreach ( $active_services as $active_service): ?>
<li class="active-service"><?php echo $active_service; ?></li>
<?php endforeach; ?>
</ul>
<?php endif; ?>
<a href="#" title="Se cases" class="cta">Send mig et forslag på et samarbejde <i class="fa-solid fa-arrow-right-long"></i></a>
</div>
<div class="case-image col col--xs-12 col--sm-12 col--md-6 col--lg-6">
<img src="<?php echo $cases['case_billede_url']; ?>" alt="<?php echo $cases['case_virksomhedsnavn']; ?>">
</div>
</div>
</div>
<?php endif; ?>
