The below shows some typical Twig templating examples for field setups.
{% for row in entry.superTablePlainText.all() %}
{{ row.plainText }}
{% endfor %}
{{ entry.superTableRichText.richText }}
{% for row in entry.superTableMatrix.all() %}
{% for block in row.matrix.all() %}
{% if block.type == 'block1' %}
{{ block.plainText }}
{% endif %}
{% endfor %}
{% endfor %}