[Paraphrased from IRS rules]
Can you file without having received your W-2? Yes, but only if you have not received it by the end of February, and you have contacted your employer and attempted to obtain it, and you still have not received it then you contact the IRS (see the link below), then if the IRS is not successful in getting your W-2, you can use form 4852 in place of your W-2. But you MUST speak to the IRS before doing so. Otherwise, you cannot file before you receive your W-2.
https://www.irs.gov/newsroom/irs-can-help-taxpayers-get-form-w-2-0
Are you waiting to get one in the mail? Ask your employer for another copy. Do not file without all your income.
[Paraphrased from IRS rules]
Can you file without having received your W-2? Yes, but only if you have not received it by the end of February, and you have contacted your employer and attempted to obtain it, and you still have not received it then you contact the IRS (see the link below), then if the IRS is not successful in getting your W-2, you can use form 4852 in place of your W-2. But you MUST speak to the IRS before doing so. Otherwise, you cannot file before you receive your W-2.
https://www.irs.gov/newsroom/irs-can-help-taxpayers-get-form-w-2-0