Mozart's early Allegro K.1c is a charming and lively piece that displays the composer's nascent genius for melody and form, characteristic of his prolific output during his childhood.
Focus on achieving a light, crisp articulation and seamless transitions between the melodic fragments and accompanying figures.
Allegro in F major (K.1c) is rated Henle level 3 of 9 — late beginner repertoire, roughly ABRSM grades 4–5. In the RCM system it corresponds to about level 5.
You should be comfortable at Henle level 3 — meaning you can already play level 2–3 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 Allegro in F major (K.1c) lasts about 2 minutes.
Allegro in F major (K.1c) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.