“Would you allow us to paste small decal on your cars, trucks, bikes for short term advertisement and pay you 2 of 2 five hundred dollars ($500) per week for the rent?
Get this started now by replying YES.”
It’s just a variant of the old cashier’s check scam. So you sign up to do this, they mail you a (bad) check for $3000 with instructions to deposit it into your checking account and mail/wire $1000 to the company that’s going to make the stickers. You send them the thousand, the check bounces and you’re out the money.