Not gonna lie, first things first I'd have to ask "Are you here to invade, occupy, assimilate or destroy humanity, or the planet itself? I need to know if I should cross Alien Invasion off my Apocalypse Bingo Card".
Because seeing how 2020 is going, and how the last few years have been going, honestly, that wouldn't surprise me.
Massive environmental disasters, global pandemics, incompetent/malicious people (in addition to the usual corrupt people) in power everywhere, and now Japanese hornets sighted in North America,
all happening at once?
Why not just cap it all off with an alien invasion at this point? It would be believable enough.
*cough*
Assuming that's not what the aliens are here to do, well, then I'd ask them what they know about us, what their purpose for visiting is, and I'd try my best to fill in the gaps. Tell them "yeah, humans are super inventive and resourceful, but a lot of us are easily misled or self-serving. Please be extra levels of careful when interacting with us. If, however, you meet some open-minded ones, you're in for a good time.
"