How do i add if condition to a table in R?

I want to divide the skills into 3 categories a. bad (score 0-30) b. average (score 31-70) c. good (score 71-100) Code should create an excel file with a table like shown below. Skills Score Skill_score_categories Skill_1 18 Bad Skill_2 60 Average Skill_3 80 Good Skill_4 50 Average Skill_5 40 Average