From Public Health Scotland:

19,977 people started psychological therapies treatment in NHS Boards and NHS 24 in the quarter ending March 2022. This is an increase of 10.5% (1,905) from the previous quarter, and an increase of 9.2% (1,684) from the same quarter the previous year.

More than four out of five (83.1%) people started their treatment within 18 weeks of referral, compared to 84.8% of people for the previous quarter, and 80.6% of people for the quarter ending March 2021. 

https://www.publichealthscotland.scot/publications/psychological-therapies-waiting-times/psychological-therapies-waiting-times-quarter-ending-march-2022/