Covid19 killed 1.89 million people worldwide by Jan 1st 2021, according to Our World in Data. HIV killed the most people per annum in ~2004, at 1.7 million worldwide, ~23 years after the first outbreak (1981).
If we can stop Covid19 with vaccinations, lockdwons, contact tracing, then hopefully it will not reach HIV levels of cumulative historical deaths. But otherwise, it would reach the same death toll as HIV did in 40 years in about 12 years like 2020.
And note, HIV was enough to completely change human sexual interactions maybe forever - at least for ~30 years.
It's more acute than HIV was, but HIV still has an order magnitude more deaths. I remain hopeful that covid deaths won't reach those levels.