Identify LEGO set with caped red minifigure
These items are from different sets.

Let's begin with the most obvious - minifigure. It is a Royal Guard from Star Wars and there are couple of versions of them. Yours seems to be with arms and hands in Dark Red. Yet, there are still two version of them (depends on the type of cape you got):

Royal Guard with Dark Red Arms and Hands was part of two sets in 2014-2015.

Or, it can be Royal Guard with Dark Red Arms and Hands (Spongy Cape) that was part of another two sets in 2016 and 2019.

Next comes a tile. Your picture is tiny, however I think I have identified it correctly as Tile 1 x 1 with Groove with Face with Narrowed Eyes, One Eyebrow Raised and Small Frown (Kryptomite) Pattern in Orange. It was available in two sets (non Star Wars).

It is impossible to identify correctly which wedge plate version you got in your picture. It is either Wedge, Plate 4 x 9 without Stud Notches which appeared in 58 sets in White color, or Wedge, Plate 4 x 9 with Stud Notches that was part of 14 sets in White.