It could be an exoplanet transit (but that doesn't mean it is).
The star in question, TIC92352620, is an F8 main sequence star, which would be much larger than any plausible planet. If a planet transits in front of such a star, you expect a very rapid entry and exit to the eclipse with a flattish bottom, where any curvature can be attributed to limb darkening on the host star. The transit should repeat and look the same each time.
I'd say your potential transit passes that test, so it could be a Jupiter-sized planet on a 4-day orbit.
Even then, there are false positives that can produce similar results (e.g. the presence of a contribution of light from an eclipsing binary star that encroaches within the point spread function of the instrument - i.e. an unrelated star contaminating the data).
As to where you go from here, well, the discovery of an unremarkable transiting exoplanet is of interest, but not really headline news any more. A significant amount of work would remain to confirm the candidate and rule out possible false positives. At the least, because this is a bright star, one should obtain spectroscopy that shows any radial velocity deviations are very small, commensurate with a planetary nature for the companion.
Some information on eliminating (some) false positives in TESS data https://www.zooniverse.org/projects/nora-dot-eisner/planet-hunters-tess/talk/4733/2174551