Scales to Play Over Fsus4
Every chord is a subset of several scales: any scale that contains all of a chord's tones fits over it. Pick a chord to see the matching scales from its own root, the major keys the chord belongs to, and full fretboard diagrams for every scale on guitar.
A Fsus4 chord contains the notes F – A# – C. Any scale that includes every one of those 3 tones fits over it — from the root F, that means F Major, F Natural Minor, F Melodic Minor, F Harmonic Minor, F Minor Pentatonic, F Blues, F Dorian, F Phrygian, F Mixolydian, F Dorian Bebop, F Mixolydian Bebop and F Spanish. Start with the first scale listed: it is the most common choice, and the others color the same chord tones differently.
Fsus4 is also diatonic to 5 major keys: A# major (relative minor Gm), C# major (relative minor A#m), D# major (relative minor Cm), F major (relative minor Dm), G# major (relative minor Fm). In a song from one of those keys you can also solo with the key's own major scale or its relative minor pentatonic across the whole progression, not just this chord.