This is a simple One Chord Dominant Vamp with lots of space for you to refine your guitar, bass, keyboard, etc improvisation.
Practise scales, arpeggios, triads, diatonic chords, different chord voicings, etc.
The Vamp is 1 of 12 in a playlist covering all 12 Dominant 7 chords.
Some suggested scales to improvise over this vamp include:
Mixolydian, Dominant Pentatonic ( 1, 2, 3, 5, b7), Blues scale, etc.