Eligibility for ILR

[Thinkandgo]

Hello,

In Feb 2021, a student came to the UK for his masters in international business management, 1 year full time qualification.

He completes it in one year (in Feb 2022). But he does not do PSW. Because he got sponsorship visa.

He gets sponsorship visa, though not in a job related to the masters he has done in the UK.

Will his one year of study in the UK be counted for the ILR or he has to complete 1 + 5 years to be eligible for ILR?

In which year and month can he apply for his ILR? And what is the minimum salary requirement?

Thanks in advance.