Попробуйте вот так:
.left {
padding-left: 5rem !important; /* Or other value */
}
.right {
padding-right: 5rem !important; /* Or other value */
}
.salespitch {
height: auto;
background-color: #F6F7F9;
}
<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.5.0/css/bootstrap.min.css" rel="stylesheet"/>
<section class="salespitch">
<div class="container-fluid">
<div class="row">
<div class="col-6 left">
<div class="pitchText">
<h2>Lorem ipsum dolor sit amet consectetur adipisicing elit.</h2>
<p>Text.</p>
<p>Moar text.</p>
</div>
</div>
<div class="col-6 right">
<img class="img-fluid" src="https://via.placeholder.com/800" alt="">
</div>
</div>
</div>
</section>