You can find out here:
https://www.wahl-o-mat.de/bundestagswahl2021/app/main_app.html

The quiz is in German, but I translated it for you.

The options, from left to right, are
agree – neutral – disagree

At the end of the quiz, you get to assign 2x weighting to questions that are more important to you.

At the bottom of that page, click on “weiter zur Auswahl der Parteien”, to get to the next page, where you can select parties to compare yourself to.

On that page, click the checkbox next to “Hier können Sie alle Parteien gleichzeitig auswählen”, to select all parties.

Then click on “Weiter zu Ihrem Wahl-O-Mat Ergebnis”, to get your results.

Here are the questions:

1. There should be a general speed limit on all highways.
2. Germany should increase its defence expenditures.
3. 16 year olds should be able to vote in federal elections.
4. Subsidies for wind energy should end.
5. The ability of landlords to raise rent should be curtailed more strongly.
6. Vaccines against Covid-19 should continue to be protected by patents.
7. The planned end of energy production using coal in 2038 should be postponed.
8. Everyone employed (by others or by themselves), should pay into the governmental pension insurance fund.
9. The right of recognised refugees to have their families move to the country should be abolished.
10. Revenue from digital services should be taxed.
11. The traditional family unit (father, mother, children), should be more subsidies than other life partnerships.
12. Donations from companies to political parties should continue to be legal.
13. University students should receive BAföG (financial support from the state), regardless of their parents’ income.
14. Dual citizenship should be allowed in general.
15. Official statements by government agencies should factor in different gender identities in the language they use.
16. The “Nord Stream 2” gas pipeline from Russia to Germany should be put into service as planned.
17. The solidarity tax, used to fund the reconstruction of East Germany after reunification, should be abolished.
18. Muslim government employees should be allowed to wear a head scarf at work.
19. Registration of new cars with combustion engines should be allowed into the far future.
20. The federal government should have greater control over the states’ education policies.
21. The federal government should more stronly fund projects combating anti-semitism.
22. Chinese companies should be barred from participating in communication infrastructure projects.
23. The state should continue to collect the church tax. (a tax collected from employees, then distributed to churches)
24. Regulated sale of Cannabis should be legalised.
25. Germany should exit from the European Union.
26. Parties’ lists of political candidates should have a mandatory 50/50 split between men and women.
27. Medical treatments in hospitals should continue to be billed using flat fees. (charged per type of illness, regardless of time spent, intensity of treatment, or number of staff involved)
28. Large wealth should once again be taxed.
29. Facial recognition software should be allowed to be used for video surveillance of public spaces.
30. Married couples without children should also be taxed less.
31. Organic farming should be subsidised more than conventional farming.
32. Islamic associations should be recognised by the state as religious communities.
33. The carbon tax for CO2 emissions should increase more than planned.
34. The ban on incurring debts in federal and state budgets should remain part of the constitution.
35. Asylum should continue to be granted only to political refugees.
36. Federal minimum wage should be raised to at least 12€ in 2022 at the latest.
37. Air travel should be more strongly taxed.
38. Companies should decide for themselves, whether to allow their employees to work from home.