Is it this kit? https://www.amazon.com/ROBOTIME-Dollhouse-Miniature-Library-Birthday/dp/B06X3VNJBZ

If so, it says it's 1:24.

An easy way to figure it out at first is to measure something in it that you also have (like a chair) and then math it like.. is this 1 foot to 1 inch? Or one foot to half an inch?

((these make me bananas because i can think in metric but miniatures are done in inches))

Bought mine from Amazon https://www.amazon.com/ROBOTIME-Dollhouse-Miniature-Library-Birthday/dp/B06X3VNJBZ