how to make tab 4 spaces in vscode code example

Example 1: vs code tab space settings

// The number of spaces a tab is equal to. This setting is overridden
// based on the file contents when `editor.detectIndentation` is true.
"editor.tabSize": 4,

// Insert spaces when pressing Tab. This setting is overriden
// based on the file contents when `editor.detectIndentation` is true.
"editor.insertSpaces": true,

// When opening a file, `editor.tabSize` and `editor.insertSpaces`
// will be detected based on the file contents. Set to false to keep
// the values you've explicitly set, above.
"editor.detectIndentation": false

Example 2: vscode change tab to 2 spaces

Go to File > Preference > Settings > Detect Indentation and uncheck + Tab Size to 2