The problem you have is that you have separate lists for quantity, unit, item, timeframe.
To combine the data structure into a text summary requires more effort to build up the text string. There are some alternatives in this post:
HTML email is a separate topic, have a search of the forum there has been some useful discussion already.
FYI the email service that comes with Bubble is only intended for testing and is unreliable (has limits shared by other users), you should be using your own account with Sendgrid, or use API calls to another email provider.