Got in to drive my car and clutch pedal went to the floor?

The clutch secondary cylinder is inside the transmission bellhousing. Do you see any fluid dripping? It could be the clutch master went out if no fluid is leaking, here is a guide that can help, and I have included how to change out the clutch master as well.

https://www.2carpros.com/articles/clutch-doesnt-work-sometimes-or-not-at-all

Once installed pump the clutch pedal about 50 times to get the air out, the system self-bleeds. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.