I am wondering why the LSM6DSL does not have a design tip for calibration like the LSM6DS3 (DT0053, DT0059)
are these documents not valid for the LSM6DSL ?
The mentioned design tips are generic and can be used also for LSM6DSL.
I can also recommend you to have a loot at X-CUBE-MEMS1 package which contains libraries for accelerometer, gyroscope and magnetometer calibration.
Retrieving data ...