Mozart did not write a specific collection titled '8 Minuets' for solo piano; his minuets are typically found within his sonatas or as individual dance sets (e.g., K. 1, K. 2, K. 4). This entry likely refers to a miscellany of his dance movements.
Focus on precise articulation, elegant phrasing, and maintaining a light, transparent texture.
8 Minuets is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 6.
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 8 Minuets lasts about 15 minutes.
8 Minuets is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.