Matching Outfits is a Normal Trap Card.
Trap Cards are normally Set first and can be activated on a later turn, often in response to an action.
On the current TCG and OCG Forbidden & Limited lists tracked here, Matching Outfits is Unlimited.
YGOPRODeck lists Matching Outfits for these formats: Common Charity, TCG, OCG, Master Duel.
A listed print of Matching Outfits appears in Ignition Assault (IGAS-EN099) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Matching Outfits is about $0.06 on Cardmarket (prices change frequently).
