Как-то так может помочь
library(dplyr)
library(rvest)
page %>%
read_html() %>%
html_nodes("div.rtcode") %>%
html_text()
#[1] "#Venezuela#China#Russia#Caracas#Chinese army soldiers arrived in
#Venezuela #Chinese People’s Liberation Army soldiers, as part of a
#cooperation program, #arrived, after delivering humanitarian supplies, to one
#of Venezuelan military #facilities. pic.twitter.com/HwZ9Ee67d0— Sukhoi Su-57
#frazor\U0001f1f7\U0001f1fa\U0001f1ee\U0001f1f3 (@I30mki) 1. April 2019"
Или, если вы хотите уникальный твиттер-URL
page %>%
read_html() %>%
html_nodes("div.rtcode a") %>%
html_attr("href") %>%
grep("status", ., value = TRUE)
#[1] "https://twitter.com/I30mki/status/1112578904835981312?ref_src=twsrc%5Etfw"