Scales to Play Over F7sus4
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 F7sus4 chord contains the notes F – A# – C – D#. Any scale that includes every one of those 4 tones fits over it — from the root F, that means F Natural 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.
F7sus4 is also diatonic to 4 major keys: A# major (relative minor Gm), C# major (relative minor A#m), D# major (relative minor Cm), 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.