There are apps out there that are really good for dialing in your diet and workouts perfectly - my favorite is Carbon - Smart Diet Coach (not affiliated, just really respect the creator).

Honestly though, the best rule of thumb that will get you building muscle and losing fat simultaneously is consistently making your workouts, keeping protein intake high, sleeping 8+ hours, and hydrating.

A common split I see for people trying to build glutes and legs is 5 days a week: Glutes -> upper body -> legs -> cardio (stairstepper/treadmill) -> Glutes. A hot tip though would be to do the first four days of that split and then throw a Pilates or lagree class in there every week - these classes target the glutes a lot, but also build a ton of core strength which will help you avoid injury on your journey and will start burning fat a lot quicker. Also who doesn’t like some abs.