Hello,
If you are looking to add the icons in the footer bottom section, Go to Appearance > Customize > Footer bottom, In the copyright section, add the below codes.
PS- Change the icon class according to need.
<ul class="footer-payment-icons">
<li><i class="fab fa-cc-amex"></i></li>
<li><i class="fab fa-cc-mastercard"></i></li>
<li><i class="fab fa-cc-diners-club"></i></li>
<li><i class="fab fa-cc-discover"></i></li>
<li><i class="fab fa-cc-paypal"></i></li>
<li><i class="fab fa-cc-stripe"></i></li>
<li><i class="fab fa-cc-visa"></i></li>
</ul>
And add the below CSS code from the Appearance > Customize > Custom CSS, and check.
ul.footer-payment-icons {
list-style: none;
display: inline-flex;
}
ul.footer-payment-icons li i {
font-size: 30px;
padding: 0 2px;
color: white;
}
PS- Change the required values in the above code according to need.
If you want looking add the colorful icon, upload the images of those icons and follow the below post, this will help you with adding the payment icons images.
https://njengah.com/add-woocommerce-payment-icons-footer/