How to add the rating field
Look for the Rating & Ranking section on the left hand-panel. Choose between three rating field types,Star rating, Slider, and Opinion Scale.

Rating vs. ranking
Although similar, rating and ranking accomplish different goals. Rating questions are used to compare different options using a numeric scale. For example, asking product users how effective a vitamin C serum is in fading dark spots. Conversely, ranking questions are used to determine how strongly or weakly a respondent feels with items on a list. For example, asking respondents to rank their most and least favorite movie genre.Related articles
Collect a ranking
Ask respondents to compare options by ordering them.
Embed PDFs
Attach full copies of PDFs in your survey or form.