I think your question is overly vague. 'what analysis can I do'
I will restrict my response to practical advise to get started.
if your data is in excel, it would need to be imported with some library, for example openxlsx.
otherwise you could save out the excel to a csv and read it in with base read.csv, or readr::read_csv,
also you have the option of importing it with the Rstudio IDE import helper ' import dataset' in the file menu.