This is the 7263rd most frequent Japanese word.
並
"並" means "average" or "ordinary."
Here, '並の' means 'standard' or 'average', describing the quality of the dishes.
このレストランの料理は普通の並の品質です。
The dishes at this restaurant are of a standard quality.
In this context, '並んで' is the verb form, meaning 'lined up' or 'in a line'.
人々がイベント会場の外に並んでいました。
People were lined up outside the event venue.
Here, '並びました' is used to describe the action of standing in a row or a sequence.