This driving, high-energy work is a staple of early keyboard repertoire, utilizing intense scale-work and constant motion. It is a quintessential example of the Empfindsamer Stil associated with the Bach family.
Maintaining consistent, energetic momentum in the rapid sixteenth-note patterns is the primary technical hurdle.
Comparable difficulty and character — good candidates for what to learn next.
Solfegetto in C minor, H 220 is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 7.
You should be comfortable at Henle level 4 — meaning you can already play level 3–4 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
A typical performance of Solfegetto in C minor, H 220 lasts about 3 minutes.
Solfegetto in C minor, H 220 is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.
Pieces at a comparable difficulty and character include Allegro in A major by Carl Philipp Emanuel Bach, Allegro by Carl Philipp Emanuel Bach, 12 Variations auf die Folie d'Espagne, Wq.118/9 (H.263) by Carl Philipp Emanuel Bach — see the full similar-pieces list on this page.