Statement:
The level of criminal activities is higher in Saudi Arabia than in Qatar

In the The Most Criminal Countries rating Saudi Arabia holds position #124 ²⁰²² out of 139 and Qatar is #136 out of 139 ²⁰²².
Position of Saudi Arabia is worse than position of Qatar.
Both countries are outsiders of the "The Most Criminal Countries" rating. So in most cases, you can feel safe and unlikely will face a criminal, compared to most countries of the World.

Referencies:

1. The Most Criminal Countries ²⁰²² by Numbeo

   The countries in the rating sorted by 'Crime Index' in descending order.

   Qatar	'Crime Index' value is	14.15
   Saudi Arabia	'Crime Index' value is	24.62