I am on h4 my visa got expired and appiled for extension but its status is still pending and i dont have itin then how should i file tax return with my husband

It depends if you want to file separately or jointly. 

Without your SSN or ITIN, you won't be able to proceed to e-file, unfortunately.  You will have to paper-file.   It might be easiest to file Married Filing Separately, then you will not need to apply for an ITIN. If you want to file jointly, you will need to apply for an ITIN.  Either way, you won't be able to e-file and must paper file your taxes. You can still use the program to prepare your tax forms but submit by mail.  Below are the steps how you enter info in the program:

To file separately without the SSN or ITIN: 

• In the program, leave the SSN space blank
• After completing the return, print out the forms.  Write “NRA” in your's SSN space. ( NRA stands for Nonresident Alien). Do not leave the space blank. 
• Submit all the forms and required documents to IRS based on the instructions on your print-out.

To file jointly, you basically file and apply for the ITIN together:

• In the program,  leave the SSN space blank
• After completing the return, print out the forms. Write APPLIED in your SSN space.
• As TurboTax does not support the Form W-7, fill out the forms by following  W-7 and attach other required documentation
• Submit all forms and documents to the IRS Austin location in Texas.  (see Form W-7 instructions)