If, for some reason, the creature doesn’t have the squad ability when it’s on the battlefield, the ability won’t trigger, even if you’ve paid the squad cost one or more times.
Securitron Squadron
You may pay the squad cost any number of times. You will create a token that is a copy of that permanent for each time you paid the squad cost. If you paid the squad cost multiple times, the tokens will all enter the battlefield simultaneously.
If the spell resolves but the creature with squad leaves the battlefield before its squad ability resolves, you’ll still create the token copies.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Tim Brumley
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
