Hello Joey, I'm Quinn, and I'm happy to help you.
Have you installed the Minecraft Launcher from the Microsoft Store? If not, you can download it there. Once it's installed, open the launcher. You'll see options for both Minecraft: Java Edition and Minecraft: Bedrock Edition on the left side.
To play on Java Edition, select "Minecraft: Java Edition" and then click "Play". However, if you want to switch back again to play Bedrock Edition, just click on "Minecraft: Bedrock Edition" or "Minecraft for Windows" and then click "Play".
Let me know if you have any other questions!