It was on HBO Max but got removed a few months back.

https://click.justwatch.com/a?r=https://www.justwatch.com/us...

Justwatch claims HD is on Roku and SD is on Tubi, but I didn't confirm that.

I don't know the service offhand but, when it was removed from HBO, it was made available somewhere else. I'm fairly certain it's on a free service.

Note the date of the article: April 25, 2021