Is this read as and or or? Because it doesn't sound right while speaking aloud. Or is there some other way you can say it?
It's normally read aloud as simply and or, ignoring the slash altogether.
This and or that.
The slash is silent, and or, not. Depends on the speaker and their mood. The slash is used mostly to signal that this isn't a typo.
And [a very brief, meaningful pause] or [another one].
People say it like they would "and or," or "andor." Much like we don't pronounce the hyphen in a word with a hyphen (e.g., half-day), we also don't pronounce the slash (/) in "and/or." Instead, we simply pretend the slash isn't there and read the word as we would if there were no slash at all.
By the way, "and/or" constitutes a single word, just like "half-day" does. You may think it's two words with a slash in between, but it's not. You may also think it's adhoc, but it's not that either. "And/or" is listed in the dictionary as a single word that is pronounced [and-awr] and is defined as a conjunction that means either or both of the things mentioned may be affected or involved.