See a step by step example here.
Everyone's Google Sheets fields are different, so this example shows you the basics! Your form questions should match the fields you wish to update in Google Sheets.
<%= heading %>
<% } %>
<%= heading %>
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<% blocks.forEach(function(block, index) { %>
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<% if (imageHeight) { %>
<% } %>
<% if (block.name) { %><%= block.name %>
<% } %> <% if (block.description) { %><%= block.description %>
<% } %> <% if (block.linkText && block.html_url) { %> <% } %>
<% }) %>