There is absolutely no way we can help you based on such an incredibly vague description. Do you see that black console window at the bottom of the Arduino IDE window? Scroll all the way to the top of that window and read the actual error messages you will find there. That's the important information for troubleshooting.
When you encounter an error you'll see a button on the right side of the orange bar "Copy error messages". Click that button. Paste the error in a message here USING CODE TAGS (</> button on the toolbar).