Hii
Hope you are well and safe during this pandemic.
With regard to your questions, I would like to ask few questions, before answering and guiding you with reference to your medical problems.
1. Since how long you are having this problem?
2. Do you have any pain in any area ? Describe please?
3. Do you have any history of trauma to your shoulder or neck?
4. What is your profession? Specifically that requires long time seating or doing work in one position for long?
Next Steps
Do light exercises for your neck and shoulder .
Do some hot water Fomentation.
You can apply some pain reliving and muscle relaxing gel.
Health Tips
Do not over massage any of the area.
Avoid heavy weight on head or shoulders.