Today (August 9th 2021) Scotland has moved out of the level system (0-4).
The situation regarding remaining requirements and guidance can be found here ,
In Scotland it is still a legal requirement to wear facemasks in most indoor public spaces and public transport (Children under 12 are exempt from this).
The requirement to self-isolate has changed – see information on the link.
There is no requirement for physical distancing or limit on numbers that can meet.
Regular hand washing, keeping surfaces clean and good ventilation are all sensible measures to continue.