Once your data is ready for analysis, you need to obtain the descriptive statistics.
Video with examples to show how to obtain in R:
#summary stats (mean,median, min, max, sd, quantile, range, skewness, kurtosis, #not for mode) for one variable - vector and dataframe
#individual stats for observations in a vector/dataframe
#individual stats for subset of variables in a dataframe
#summary stats for a continuous variable over a factor/group
#frequency table applicable for factors
...
https://www.youtube.com/watch?v=mZntY5ELqCk