To submit your podcast RSS feed to Spotify, follow these steps:

Create a Spotify Account: If you don't have a Spotify account, create one. If you already have an account, log in.
Access Spotify for Podcasters: Go to the Spotify for Podcasters platform at https://podcasters.spotify.com .
Log in: Log in to Spotify for Podcasters using your Spotify account credentials.
Claim Your Podcast: If your podcast is not already on Spotify, you will need to claim it. If it's already listed, you can skip this step.
Provide Podcast Details: Fill in the required information about your podcast, including its title, description, and category.
Verify Ownership: Spotify will ask you to verify ownership of your podcast. This can be done by either adding a unique code to your podcast's RSS feed or by selecting an email verification option.
Submit Your RSS Feed: Once ownership is verified, you can submit your podcast's RSS feed. Enter the RSS feed URL of your podcast.
Review Submission: Review the details you provided and make sure everything is accurate.
Submit: Click on the "Submit" button to send your podcast for review.
Wait for Approval: Spotify will review your submission. The approval process may take some time.
Confirmation Email: You will receive a confirmation email once your podcast is approved and live on Spotify.

Remember that it may take a few days for Spotify to process and approve your podcast.

If you encounter any issues during the submission process, you can contact Spotify's support for assistance.