Reviews of dance performances may be found in newspapers, dance magazines and journals, and websites about dance. Some reviews may also be compiled in books.
You will need to know WHERE and WHEN the performances you are interested in took place.
With links to some of their reviews, stand-alone or in compilations...
Newspapers which have (or once had) regular dance review columns:
Compilations of published reviews:
Popular dance magazines that include (or did include) reviews: