How long does it take to get good?

In chess.com users have a rating. What is this? Is this connected to a wider chess rating? How can one's rating level be interpreted, and what is a passably good rating?

Chess.com Rapid Elo Distribution (September 2023) : r/chess

FIDE Elo percentiles : r/chess

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chess.com blitz rating percentiles : r/chess

Diego Rasskin Gutman on X: Blitz Rating differences 2200 in chess com puts me in the 99.6% percentile 2344 in lichess puts me in the 98.2% percentile / X

Figure 1 from Bias in the ELO-system of online chess

What percentile of fide 1600 rated player? - Chess Forums