Question

1. learning subjects: English, math, science, etc.
2. subjects to learn:English, math, science, etc.
3. studying subject:English, math, science, etc.
4. subjects learning:English, math, science, etc.
5. taking subjects:English, math, science, etc.
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Which title on the left is suitable and correct?

Answer 1

I'm not sure what this is for, mainly because you're not using full sentences.

Full sentences --

I'm learning these subjects: English, math, science, and a few others.
I'm studying these subjects: English, math, science, and a few others.
I'm taking these subjects: English, math, science, and a few others.

Answer 2

1. Learning Subjects: English, math, science, etc.
2. Subjects to learn:English, math, science, etc.
3. Studying Subject:English, math, science, etc.
4. Subjects Learning:English, math, science, etc.
5. Taking Subjects:English, math, science, etc.
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Thank you.
Can we use the title on the left?

Answer 3

What title on the left? Are you trying to write a title for a paper or a story? or what?

ALWAYS put a space after a colon.