Only the receipt arrived.

From here?
https://www.a1.net/handys-tarife/wertkartentarife/austria-prepaid-data-esim

Did you read the FAQs?
I dont think there will come something via mail, you have to scan the QR-code on your mobile.

I already bought it and I'm not receiving the e-sim in the email.

How long should this take to be emailed?

You did not answer my questions, we dont even know which exactly product you bought.
So I cant help, please contact A1, here is only a user forum.
You may cancel the order and get back money.

I bought a tourist esim.

Where did you buy it and what exactly which tarrif prepaid or postpaid.

hello i paid already 12.90 euro for esim and i got only reciep. I did not recived the qr code

I cant help if you dont answer my questions what exactly you bought?
We need the link where you ordered the eSIM to see what product you have.

https://www.a1.net/handys-tarife/wertkartentarife/austria-prepaid-data-esim

ok, you should get 2 e-mails within few minutes.
Did you check your spam-folder?
It comes from a different mail-address and might be blocked.

I wrote you a PM.

It's been more than 24 hours and I haven't received an email.

And not in spam either.

I wrote you a PM, please read it and answer there.
You can find it on the top right (your avatar/account) click on “Nachrichten”.

Here in public area (forum) I cant help you any further.
You could only contact A1 directly per mail to kann.ich.helfen@a1.at.
But maybe an answer will take to much time till you need it.
When will you be in Austria (how urgent is it)?

If there is no solution till your arrival you will find an A1-shop at Vienna Airport where you can get support face to face.