What is SQL Server Management Studio (SSMS)
SQL Server Management Studio is an integrated tool for managing databases from SQL Server to Azure SQL Database. As you know, since later versions of sql installed, SQL Management Studio is no longer available, so you need to download and install.
How to Download SQL Server Management Studio (SSMS)
Download SQL Server Management Studio (SSMS)
You can download the latest version of SQL Server Management Studio from the link above. If you have a previous version of SSMS installed, you can upgrade it.
After you finish downloading the setup file to your computer. You need to run it, then install the following steps.

Selecting the location you want to install, then click Install button

Wait until the installation is finished

Clicking Restart button to restart your computer.
After restarting the computer, you can find Microsoft SQL Server Tool in the start menu.

Entering your sql account to connect to SQL Server.