Beating stages in Cookie Run: Kingdom is essential if you want to progress through the main storyline. Stages 2-13 are one of the most important stages to beat, as they unlock the Boutique.
Complete Stage 2-13 and the Boutique Opening Mission First | Cookie Run: Kingdom | BBBCookie
As long as you have the right team, you should have no problem getting three stars and completing this level in one go. It's a fairly early level in the game, which means you're probably still figuring things out, so here's how to complete stages 2-13 in Cookie Run: Kingdom.
To survive levels 2-13 in Cookie Run: Kingdom, you'll need a carefully crafted team that meets or exceeds the recommended power level and is versatile with strong attack, defense, and support units.
Since this stage is fairly early in the game, you probably won’t have many powerful units to work with. Luckily for players, you can easily use your starting crew of cookies to get through this level, as long as you’ve been working on building them.