Not sure what to do?

I brewed a nut brown this past Fri,from a kit, and I have not seen my air lock move at all. I have been checking it everyday. I hit all my numbers so Im not sure whats going on. It is in a bucket so I cant really see anything. I popped the lid off and there is some froth on top. Should I let it go? I am new to this, but not my first batch. just have come across this yet. Any insight would be greatly appreciated.

Hi! Welcome to the forum.

If you are seeing krausen, that's what fermentation looks like. So you're all set. Just check it in about 10 days or so, to take a hydrometer reading. Everything sounds like it's going exactly as it should.

Sounds like the yeast was not viable. Try pitching more yeast. You should make sure your yeast is viable by Rehydrate the dried yeast