Barre chord
fret 1, E shape131211
F7 is the F dominant 7 chord. Its notes are F, A, C and E♭. A major triad with a flat seventh. Try G7 resolving to C.
131211
x-8-10-8-10-8
Numbers show frets from the low E string to the high e string; x means don't play that string.
F7 is the V7 chord in B♭ major. That makes it a natural fit in songs written in those keys.
Every F, A, C and E♭ on the first 12 frets. The filled dots are the root, F. Build your own shape from any nearby group.
Other F chords
Other dominant 7 chords