Teacher

Yes, Commerce students can definitely do B.Ed and become teachers too if they completed their graduation (like B.Com.) with at least 50 - 55% marks.
Now, when it comes to teaching, you will usually be eligible to teach subjects like:

Commerce or Business Studies
Accountancy
Economics (in some cases)
Maths (if you had it in 12th and graduation)
Keep in mind that you will have to pick subjects during B.Ed that align with what you studied. Also, if you plan to teach in schools like CBSE or state boards then clearing CTET or state TET with commerce-relevant subjects will make your journey smoother.

Firstly, you need to provide your professor all the information about yourself. Secondly, explain properly as to why you need him/her to write a LOR for you. Thirdly, provide your reasons for choosing him/her as your recommender above others.

You can get around 15 to 35k if you are teaching in a private school. Some private schools that is costly for students can also pay you better. As a government school teacher, you can also get around 80k.

If you have experience with an extra income source, then can earn 1 lakhs every month. Otherwise, the average salary is 60k.

The pay scale of PGT teachers in the Central Government is INR 47,600 to 1,51,100, which falls under Level-08 of the pay matrix. An eligible candidate is also entitled to various benefits, allowances, and perks apart from the basic PGT teacher salary.