These are not 'two-part inventions' but a generic title for a collection of suites. Bach's keyboard suites are foundational works that demonstrate his mastery of dance forms and contrapuntal writing.
Focus on maintaining rhythmic stability and clear articulation of the dance rhythms.
2 Suites is rated Henle level 5 of 9 — late intermediate repertoire, roughly ABRSM grades 6–7. In the RCM system it corresponds to about level 8.
You should be comfortable at Henle level 5 — meaning you can already play level 4–5 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 2 Suites lasts about 8 minutes.
2 Suites is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.