You can find a list of MS certifications at https://learn.microsoft.com/en-us/certifications/ where for each exam you will also find free MS Learn resources you can follow. Start with Fundamentals certifications and then move your way up to Associate level certifications.
While learning you'll be able to choose your role aspiration and field of interest. Once you've built up your skills you can start looking for work opportunities in the field of your choice.
If you'll have any specific questions on certifications and exams, please consult their dedicated forums:
Microsoft Certification - Profile General: https://trainingsupport.microsoft.com/en-us/mcp/forum/mcp_prof-mcp_inquiry
Microsoft Certification - Profile/MCID Assistance: https://trainingsupport.microsoft.com/en-us/mcp/forum/mcp_prof-mcp_mcid
Pearson VUE Support:
Pearson VUE - Customer Service: https://home.pearsonvue.com/Test-takers/Customer-service.aspx
Pearson VUE - Chat: https://home.pearsonvue.com/microsoft/contact