"Does anyone can help me perfect my English grammar" is not correct.
There are many ways to write it, depending on how you want to sound; some ways are:
- Does anyone want to help me perfect my English grammar?
- Can anyone help me perfect my English grammar?
- Is anyone willing to help me perfect my English grammar?
Anyway.... I'd be happy to help :) It would be a lot easier if you have more specific questions about grammar because it's just such a large and general topic.
Puwede mo rin itanong sa Tagalog kung gusto mo :]
(You can also ask in Tagalog, if you want.)