BiocLite has been deprecated quite some time ago, it was for R < 3.5.0. As in the link you provide the current installation machinery relies on BiocManager::install():

if (!requireNamespace("BiocManager", quietly = TRUE))
BiocManager::install(version = "3.12")

Once this is installed via CRAN you can go like BiocManager::instal("BiocPackageName")

before adding your answer.

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