HOW DO YOU delete or Paint over or fill a couple words of text/ numbers??

I have a bank document PDF, and just need to delete, or paint over in white, a select fill of words of text/ actually bank account numbers.

Even though I'm 25 years in PHotoshop. I could not after fifteen minutes figure out how to select a couple of words of text and delete.  I also could not find a pen tool to write over or paint over.

Also could not find a way to select and fill.  Extremely frustrating, as I'd have this done easly in 1 min in Photoshop. I was able to bring it into photoshop, but then PS seperates the pages.

I even googled how to do this , but did not help, some goofy tips on commeing .. Totally flustred.

I knew Acrobat would be harder than photoshop, but I though after 15- 20 mintues, I'd find one of those three methods, but no totally stuck. Thanks!