Based on the photo, your orchid appears to be a member of the Cattleya alliance. These orchids have pseudobulbs (thickened stem bases) from which thick, leathery leaves emerge—typically one or two per pseudobulb.
The alliance includes Cattleya, Laelia, Sophronitis, and many others. They readily cross to create intergeneric hybrids, which is likely what you have. A similar-looking hybrid is Iwanagara 'Apple Blossom', though many hybrids share this appearance.
Use a coarse, fir bark-based orchid mix with good drainage. Repot after flowering when new roots begin to grow.
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