A bar chart will start to build with a row and a value. Values should be numeric, as they'll be plotted on a chart. Rows are often categories.
To get started building a bar chart, follow these easy steps:
First, give the bar chart a unique name. Maybe something that encapsulates the categories and measures.
After naming the bar chart, start by configuring a row.
Rows in a bar chart will represent the y-axis values or categories for your bars.
After adding at least one row, you'll need some values to aggregate.
Once you add a value, the bar chart will begin to build. Make sure that the aggregate operator for your bar is configured as intended.
You can add multiple values to create a grouped bar chart. Each row (category) will display multiple bars.
If necessary, hone in on the data with filters. Simple operators are available. Create more complex filters with multiple operators (i.e. category includes 'x' and values are greater than 'y', etc.).
To build a multi-bar chart, add another value and you will see two bars.
Here is an example of some Google Search Console Data exported to Google Sheets and embedded as a basic bar chart in this post.