To move Top section in Footer above Related Products in Squarespace, you can use this code to Website Tools > Code Injection > Footer.
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.0/jquery.min.js"></script>
<script>
$(document).ready(function(){
$('footer.sections section:nth-child(1)').insertBefore('h2.ProductItem-related-label');
});
</script>
<style>
main#page.container section.ProductItem-summary~section>section {
padding-top: 0px !important;
padding-bottom: 0px !important;
}
</style>
Result
